Sharma / Santhanam / Suresh Chandra Mishra / Tara Chandra (śl.60) / Girdhari Lal / Ganesha Datta Pathaka (śl.50):
पापयोगेन तौ पापक्षेत्रयोगेन वा पुनः । उत्पाट्य सहजान्सद्यो निहन्तरौ न संशयः ॥३॥
pāpayogena tau pāpakṣetrayogena vā punaḥ | utpāṭya sahajān‌sadyo nihantarau na saṃśayaḥ ||3||
Translation: If these both (i.e. Mars and 3^rd Lord) (tau) are conjoined by malefic (pāpa-yogena) or even in the malefic sign (pāpa-kṣetra-yogena vā punaḥ), they will be two destroyers (nihantarau) extirpating/banishing/splitting the siblings (utpāṭya sahajān) soon (sadyo), without doubt(na saṃśayaḥ).

Note 1: Chandra / Lal / Pathaka: pāpayogena tau -> tau pāpayogataḥ (meaning is the same); nihantarau na saṃśayaḥ -> nihantā śāstraniścayāt (“destroyer/destruction, this is certainly said in Śāstras” – meaning is similar).
Note 2: The Sun is not considered here among malefics since it is not pāpa.
nihantṛ – a killer, murderous, who or what kills.

Illustrations:
Olga, Grand Duchess – the first child of Czar Nikolai II. She was brutally executed along with her entire family – including her 3 sisters and brother – in the early hours of 17 July 1918 by Bolshevik revolutionaries (3L Mercury is in MKS, with Mars and Saturn, under Rāhu rāśi and graha dṛṣṭi).
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Biography
Mia Farrow – has 3 sisters and 3 brothers (3L Mercury is conjoined Mars in kendra) but her brother Michael died in a plane crash (Mars and 3L in malefic sign) when she was 13.
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Biography
William S. Schaffer – younger brother died at age of 5 (3L Mercury is with Rahu and Sun under Saturn graha dṛṣṭi, Mars is in 12H with dark Moon)
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Biography

Sharma / Santhanam:
मृतौ कुजतृतीयेशौ सहोदरविनाशकौ ॥५॥
mṛtau kujatṛtīyeśau sahodaravināśakau ||5||
Translation: If Mars and the 3^rd Lord are in the 8^th house ('house of death') (mṛtau kuja-tṛtīya-īśau), they are destroyers of siblings (sahodara-vināśakau).

Suresh Chandra Mishra:
मृतौ कुजतृतीयेशौ सहोदरविनाशकौ ॥५॥
सोदरनाथभौमौ च नाशस्थानगतौ यदि । पापेक्षितौ पापयुक्तौ भ्रातृनाशकरौ मुने ॥६॥
mṛtau kujatṛtīyeśau sahodaravināśakau ||5||
sodaranāthabhaumau ca nāśasthānagatau yadi | pāpekṣitau pāpayuktau bhrātṛnāśakarau mune ||6||
Translation: If Mars and the 3^rd Lord are in the 8^th house ('house of death') (mṛtau kuja-tṛtīya-īśau), they are destroyers of siblings (sahodara-vināśakau).
If (yadi) the 3^rd Lord ('Lord of the house of siblings') and Mars (sodara-nātha-bhaumau ca) are situated in the 8^th house ('house of destruction') (nāśa-sthāna-gatau), aspected by malefics (pāpa-īkṣitau) or conjoined by malefics (pāpa-yuktau), they are causing destruction of brothers (bhrātṛ-nāśa-karau), oh sage (mune).

Note: The Sun is not considered here among malefics since it is not pāpa.

Illustration: Jean-MarieGuyau – French philosopher and poet, only child of Augustine Tuillerie, French writer best known under the pseudonym G. Bruno (3L Mercury is in the 8H with Mars and Ketu under graha dṛṣṭi of Saturn and Mars.)
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Biography

Tara Chandra / Girdhari Lal:
नाशस्थितौ सोदरनाथभौमौपापेक्षितौ सोदरनाशमाहुः। पापेक्षितौ पापसमन्वितौवा त्रिसप्तविद्याप्रविनाशहे तु ॥६२॥
nāśasthitau sodaranāthabhaumau pāpekṣitau sodaranāśamāhuḥ |
pāpekṣitau pāpasamanvitau vā trisaptavidyāpravināśahetuḥ ||62||
Translation: If the 3^rd Lord ('Lord of the house of siblings') and Mars (sodara-nātha-bhaumau) are located in the 8^th house ('house of destruction') (nāśa-sthitau)and aspected by malefic (pāpa-īkṣitau), then the destruction of the brothers and sisters should be declared (sodara-nāśam-āhuḥ).
If both are aspected by malefic (pāpa-īkṣitau) or conjoined by malefic (pāpa-samanvitau), this is cause of destruction of 21 knowledges (tri-sapta-vidyā-pravināśa-hetuḥ).

Ganesha Datta Pathaka:
No such śloka

Note: tri-sapta = 3x7 = 21, trisapta means in general the whole Universe.
21 refers to 5+5+5+5+1:
· "Pañca Tanmātrās" or five objects (color, sound, smell, taste, touch)
· "Pañca jñāna indriyas" or five sense organs (eyes, ears, nose, tongue and body)
· "Pañca karma indriyas" or five organs of action (hands, legs, vocal apparatus, urino-genital organ and anus)
· "Pañca mahābhūtas" or five great substances (earth, water, fire, air and ether)
· "Antahkarana" - which is 'mano-buddhi-ahamkara'

Sharma / Santhanam / Suresh Chandra Mishra (śl.7) / Tara Chandra (śl.64) / Girdhari Lal / Ganesha Datta Pathaka (śl.53):
केन्द्रत्रिकोणगे वाऽपि स्वोच्चमित्रस्ववर्गगे । कारके सहजेशे या भ्रातृसौख्यं विनिर्दिशेत्‌॥६॥
kendratrikoṇage vā’pi svoccamitrasvavargage | kārake sahajeśe yā bhrātṛsaukhyaṃ vinirdiśet‌ ||6||
Translation: If Kāraka [i.e. Mars] or the 3^rd Lord ('Lord of siblings') (kārake sahaja-īśe yā) is in the kendra or trikoṇa (kendra-trikoṇa-ge vā’pi), in own house, in exaltation, in friendly house or in own varga (sva-ucca-mitra-svavarga-ge), then happiness of/from brothers (bhrātṛ-saukhyaṃ‌) should be declared (vinirdiśet‌).

Note 1: kārake sahajeśe yā – looks like instead of yā should be vā (‘or’)
Note 2: Mishra: sahajeśe yā -> bhāva-nāthe vā (meaning is similar).
Mishra / Chandra / Lal / Pathaka: vinirdiśet‌ -> vaded-budhaḥ (meaning is similar – “a wise should declare”).
Chandra / Lal / Pathaka: kārake sahajeśe yā bhrātṛ-saukhyaṃ -> nāthe vā kārake vāpi bhrātṛ-lābhaṃ (meaning is similar – instead of 'Lord of siblings' - > 'The Lord'; instead of “happiness from brothers” –> “obtaining brothers”).

Illustration: Beatrice, Princess of England – the daughter of Queen Victoria and Prince Albert, their ninth and last child (3L Venus is in Taurus in 10H, Mars is in Aries in 9H)
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Biography

Sharma / Santhanam / Tara Chandra (śl.65-66½) / Girdhari Lal / Ganesha Datta Pathaka (śl.54-55½) / Suresh Chandra Mishra (śl.8-9½):
भ्रातृभे बुधसंयुक्ते तदीशे चन्द्रसंयुते । कारके मन्दसंयुक्ते भगिन्येकाग्रतो भवेत्‌ ॥७॥
पश्चात्सहोदरोऽप्येकस्तृतीयस्तु मृतो भवेत्‌ ।
bhrātṛbhe budhasaṃyukte tadīśe candrasaṃyute | kārake mandasaṃyukte bhaginyekāgrato bhavet ‌||7||
paścāt‌sahodaro ’pyekastṛtīyastu mṛto bhavet ‌| 8 ½
Translation: If the 3^rd house ('house of brothers') is joined by Mercury (bhrātṛ-bhe budha-saṃyukte), the 3^rd Lord is joined by Moon (tad-īśe candra-saṃyute), the Kāraka [i.e. Mars] is joined by Saturn (kārake manda-saṃyukte), the person will have one elder sister (bhaginī-eka-agratas bhavet). After [the person] one sibling will be born (paścāt‌-sahodaro ’pi-ekas), and this third child will die (tṛtīyas-tu mṛto bhavet).

Note: Chandra / Lal paścāt-sahodaro ’py-ekas-tṛtīyastu mṛto –> paścātsahodare ’py-etat-tṛtīyastu mṛtau (meaning is similar).

Illustration: Cindy Crawford - younger brother died from leukemia at age 3, she has also older sister, Chris and younger sister, Danielle (Mercury aspects the 3^rd house from Aquarius and conjoins 3L Sun+Moon and Saturn+Mars)
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Biography

Sharma / Santhanam / Suresh Chandra Mishra (śl.9-10½) / Tara Chandra (śl.66-67½) / Girdhari Lal / Ganesha Datta Pathaka (śl.55-56½):
कारके राहुसंयुक्ते सहजेशे तु नीचगे ॥८॥
पश्चात्सहोदराभावं पूर्वं तु तत्त्रयं वदेत्‌ ।
kārake rāhusaṃyukte sahajeśe tu nīcage ||8||
paścāt‌sahodarābhāvaṃ pūrvaṃ tu tattrayaṃ vadet‌ | 9 ½
Translation: If Kāraka [i.e. Mars] is conjoined by Rāhu (kārake rāhu-saṃyukte) and the 3^rd Lord is in the sign of its debilitation (sahajeśe tu nīcage), there will be loss/lack of siblings born after [the native] (paścāt-‌sahodara-abhāvaṃ), but three [siblings born] before him (pūrvaṃ tu tat-trayaṃ) should be declared(vadet‌).

Note: Chandra / Lal / Pathaka: sahajeśe tu nīcage –> vikrameśas-tu nīcagaḥ (meaning is similar).
Chandra / Lal: abhāvaṃ pūrvaṃ tu tat-trayaṃ vadet‌ -> ābhāvāt-pūrvas-tu trayakṛd-bhavet (meaning is similar)
Pathaka: abhāvaṃ pūrvaṃ tu tat-trayaṃ vadet‌ -> ābhāvaḥ pūrvaṃ tu tat-trayaṃ bhavet (meaning is similar)

Illustration: Mitt Romney – youngest of four sons of George Romney (3L Moon is debilitated, strong Mars in digbala in sambandha with strong Rahu ayus exaltation – Mars is in the house of Rahu and aspects Rahu)
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Biography

Sharma / Santhanam / Suresh Chandra Mishra (śl.10-12) / Ganesha Datta Pathaka (śl.56-58):
भ्रातृस्थानाधिपे केन्द्रे कारके तत्‌त्रिकोणगे॥ ९॥
जीवेन सहिते चोच्चे ज्ञेया द्वादश सोदराः । तत्र ज्येष्ठद्वयं तद्वज्जातकाच्च तृतीयकम्‌ ॥१०॥
सप्तमं नवमं चैव द्वादशं च मृतं वदेत्‌ । शेषाः सहोदराः षड्वै भवेयुर्दीर्घजीवनाः ॥११॥
bhrātṛsthānādhipe kendre kārake tat‌trikoṇage ||9||
jīvena sahite cocce jñeyā dvādaśa sodarāḥ | tatra jyeṣṭhadvayaṃ tadvajjātakācca tṛtīyakam‌ ||10||
saptamaṃ navamaṃ caiva dvādaśaṃ ca mṛtaṃ vadet‌ | śeṣāḥ sahodarāḥ ṣaḍ‌vai bhaveyurdīrghajīvanāḥ ||11||
Translation: If the 3^rd Lord (‘Lord of house of brothers’) is in kendra (bhrātṛ-sthāna-adhipe kendre), and Kāraka is in trikoṇa from it (kārake tat‌-trikoṇa-ge), joined by Jupiter (jīvena sahite)and in the exaltation (ca-ucce), then 12 siblings are to be known (jñeyā dvādaśa sodarāḥ). Of these [siblings] (tatra)there aretwo elder siblings from the person (jyeṣṭha-dvayaṃ jātakād), who is thus (tadvat ca) the 3^rd (tṛtīyakam).
For the 7^th (saptamaṃ), the 9^th (navamaṃ caiva)and the 12^th (dvādaśaṃ ca) – the death (mṛtaṃ)should be declared (vadet‌). The remaining (not mentioned yet) six siblings(śeṣāḥ sahodarāḥ ṣaḍ‌)certainly (vai) will live long(bhaveyur-dīrgha-jīvanāḥ).

Note: Suresh Chandra Mishra: vadet -> bhavet (meaning is similar).
Ganesha Datta Pathaka:
sahite cocce jñeyā -> sahitaś-cocce saṃkhyā (meaning is similar ‘known’ -> ‘reckoned’);
jyeṣṭha-dvayaṃ tadvat -> pūrva-dvayaṃ garbhaṃ (meaning is similar; garbham – ‘foetus’);
saptamaṃ navamaṃ caiva dvādaśaṃ ca mṛtaṃ vadet -> saptamaś-caiva navamo dvādaśaś-ca mṛti-pradaḥ (meaning is similar, this line is the same as in Chandra/Lal Edition).

Illustration: Walter Darlington Huddleston – he was one of the nine children of William and his wife Lottie (the 3L Moon is in Lagna; Mars is in Capricorn in 9H with Jupiter)
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Biography
Biography - wikipedia

Tara Chandra / Girdhari Lal:
भ्रातृस्थानाधिपे केन्द्रे कारके तत्त्रिकोणगे ॥६७॥ जीवेन सहितश्चोच्चे संख्या द्वादश सोदराः ॥६८॥
अयं तृतीयगर्भश्च प्रथमाच्च तृतीयके । सप्तमश्चैव नवमो द्वादशश्च मृतिप्रदः ॥६९॥
शेषाः सहोदरा दीर्घाः षड्भार्या यमलो भवेत् ।
bhrātṛsthānādhipe kendre kārake tattrikoṇage ||67||
jīvena sahitaścocce saṃkhyā dvādaśa sodarāḥ ||68||
ayaṃ tṛtīyagarbhaśca prathamācca tṛtīyake | saptamaścaiva navamo dvādaśaśca mṛtipradaḥ ||69||
śeṣāḥ sahodarā dīrghāḥ ṣaḍbhāryāyamalo bhavet | 70½
Translation: If the 3^rd Lord (‘Lord of house of brothers’) is in kendra (bhrātṛ-sthāna-adhipe kendre), and Kāraka is in trikoṇa from it (kārake tat‌-trikoṇa-ge), joined by Jupiter (jīvena sahitaś) and in the exaltation (ca-ucce), then 12 siblings are reckoned (saṃkhyā dvādaśa sodarāḥ).
This one (ayaṃ)is the third foetus(tṛtīya-garbhaś-ca) and from the first child(prathamād-ca) is the 3^rd(tṛtīyake). The 7^th (saptamaś-ca-eva), the 9^th (navamo) and the 12^th (dvādaśaś-ca) [births] give death (mṛti-pradaḥ). The remaining six siblings [will live] long(śeṣāḥ sahodarā dīrghāḥ ṣaḍ).There will besisters born as twin (bhāryā yamalo bhavet).

Sharma / Santhanam / Suresh Chandra Mishra (śl.13-14) / Ganesha Datta Pathaka (śl.59):
व्ययेशेन युतो भौमो गुरुणा सहितोऽपि वा । भ्रातृभावे स्थिते चन्द्रे सप्तसंख्यास्तु सोदराः ॥१२॥
भ्रातृस्थाने शशियुते केवलं पुङ्‌ग्रहेक्षिते। सहजा भ्रातरो ज्ञेयाः शुक्रयुक्तेक्षितेऽन्यथा ॥१३॥
vyayeśena yuto bhaumo guruṇā sahito’pi vā | bhrātṛbhāve sthite candre saptasaṃkhyāstu sodarāḥ ||12||
bhrātṛsthāne śaśiyute kevalaṃ puṅ‌grahekṣite | sahajā bhrātaro jñeyāḥ śukrayuktekṣite’nyathā ||13||
Translation: If Mars is conjoined with the 12^th Lord (‘Lord of losses and expenses’) (vyayeśena yuto bhaumo) or together with Jupiter (guruṇā sahito’pi vā), and if the Moon is situated in the 3^rd house (bhrātṛ-bhāve sthite candre), then seven siblings are reckoned (sapta-saṃkhyās-tu sodarāḥ).
If in the 3^rd house (bhrātṛ-sthāne) is conjoined by the Moon and aspected only by male planets (śaśi-yute kevalaṃ puṅ‌-graha-īkṣite), the siblings will be brothers (sahajā bhrātaro jñeyāḥ); if it is joined or aspected by Venus (śukra-yukta-īkṣite) – otherwise (i.e. they will be sisters) (anyathā).

Note: Ganesha Datta Pathaka: yuto bhaumo -> yute bhaume; sthite candre -> śaśi-yute (meaning is the same). The 2^nd shloka is missing.

Illustrations:
Mario D'Agata – one of three children (out of seven) to be born deaf in his family (the Moon is in the 3^rd house, Sagittarius, Jupiter and Mars are in Aquarius)
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Biography
Saint Bernadette – the eldest of six kids born to a poor French family (the Moon alone is in the 3H, Cancer; Jupiter and Mars together are in the 10H, Aquarius)
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Biography

Tara Chandra / Girdhari Lal:
व्ययेशेन युते भौमे गुरुणा सहितोऽपि वा ॥७०॥
भ्रातृस्थाने शशियुते सप्तसंख्यास्तु सोदराः । एतेषां द्विप्रजानाशः शुक्रयुक्तेक्षितेन हि ॥७१॥
vyayeśena yute bhaume guruṇā sahito’pi vā ||70||
bhrātṛsthāne śaśiyute saptasaṃkhyāstu sodarāḥ | eteṣāṃ dviprajānāśaḥ śukrayuktekṣitena hi ||71 ½ ||
Translation: If Mars is conjoined with the 12^th Lord (vyayeśena yute bhaume) or together with Jupiter (guruṇā sahito’pi vā), if the Moon is in the 3^rd house (bhrātṛ-bhāve śaśi-yute), then seven siblings are reckoned (sapta-saṃkhyās-tu sodarāḥ).
Among them (eteṣāṃ) two children will be lost (dvi-prajā-nāśaḥ), if Venus conjoins or aspects (śukra-yukta-īkṣitena hi).

Note: two half-lines in the middle are missed.

Sharma / Santhanam / Tara Chandra (śl.71 - 2^nd part) / Suresh Chandra Mishra (śl.15):
अग्रे जातं रविर्हन्ति पृष्ठे जातं शनैश्चरः । अग्रजं पृष्ठजं हन्ति सहजस्थो धरासुतः॥ १४॥
agre jātaṃ ravirhanti pṛṣṭhe jātaṃ śanaiścaraḥ | agrajaṃ pṛṣṭhajaṃ hanti sahajastho dharāsutaḥ ||14||
Translation: When placed in the 3^rd house (sahaja-stho), the Sun destroys elder sibling (agre jātaṃ ravir-hanti); Saturn (śanaiścaraḥ) [destroys] younger sibling (pṛṣṭhe jātaṃ); Mars (dharā-sutaḥ) destroys (hanti) both the preborn and afterborn siblings (agra-jaṃ pṛṣṭha-jaṃ).

Illustration: Tom Brokaw – the oldest of three sons of a construction engineer and a homemaker (he has yoga from previous śloka [the Moon in the 3^rd and strong Jupiter conjoins Mars], but Sun in the 3^rd house destroys elder siblings).
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Biography

Girdhari Lal / Ganesha Datta Pathaka:
No such śloka