- According to some traditions, are they are descendants of Sam (Shem), the eldest of the three surviving sons of the prophet Nuh (Noah). descendants of Sam, the son of Umar, son of Hashim, son of Abu Lahab, an uncle of the Islamic prophet Muhammad (SAW).
- There are also traditions that the Samma are clan of Muslim Rajputs
 Tribal Chiefs
The Chief of the Abro tribe was " Sardar Mungar Khan" of (Mungar) Bhag Nari, kachhi Balochistan. Sardar Ibrahim Khan Shaheed, and Sardar Haider Khan Mungrani were the most prominent among the Tribal Chief.
|“||ابڙو وڏوڙو سوڙو' سمو' سونهن سڀن |
تنهن در سڀ اچن كنڌ نه كڍي كڇ ڙڻي
(شاھ عبدالطيف ڀٽائيِ )
Chief Of Abro Tribe:
- Sardar Musa Khan Mungrani (Mungar, Bhag Nari, kachhi, Balochistan)
- Sardar Amanullah Khan Mungrani (Garhi Yaseen, Shikarpur)
OTHER ABRO SUB-TRIBE CHIEFS:
- Khan sahib Sardar Sohrab Khan Sarki(kashmore,jacobabad)
- Khan Bahadur Sardar Ahmed Khan Sadhayo (Chodio Sadhayo, Shikarpur)
- Sardar Himmat Ali Khan Kamario, Shikarpur)
- Sardar Mohammad Bux Khan Kakepoto (Shikarpur)
- Sardar Wahid Bux Khan Bhayo (Jaggan, Shikarpur)
- Sardar Mohammad Panah Khan Odho (Mohammadpur, Jacobabad)
- Sardar Rizwan Ali Khan Kehar (Larkana)
- Arbab Jumoo khan Abro (Badin)
- Sardar Dost Mohammad Khan Hakro (Kamber and Shahdad Kot District)
- Sardar Rahmatullah Jeho (Naudero Larkana)
The major sub-tribes are:
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 Samma Rule
The period of Samma rule in Sindh is considered a period of literary and cultural heights. Two centuries later, the famous Sufi poet Shah Latif was still singing their praises in `Sur Bilawal': ``When Alauddin came astride his furious elephants, Jam Abro tied his shield and the whole field shone with sabres. The Samma came to the rescue of damsels in distress - and then all was well.
|“||Sultan Alaudin marched with a huge force,|
None could dare to face him, who would bear his strokes?
To redress and protect the helpless ones, he rose,
Others gave up their proteges but not the mountain king,
Abro is the greatest refuge of all supplicants,
Abro amidst all other leaders, a forest's shady tree resembles,