Analysis of information sources in references of the Wikipedia article "Soomro" in English language version.
But as many kings of the dynasty bore local names, it is almost certain that the Soomras were of local origin. Sometimes they are connected with Paramara Rajputs, but of this there is no definite proof.
"Presence of Soomras in Kutch, Gujarat and Rajasthan in small numbers does not make them Rajputs either… All British period historians given in the table at end of this chapter have called Soomras as Rajputs under influence of Todd's writings. Actually they were local converted to Ismailism."
Other important braches and sub-divisions of the Jat in the Siraiki area include Panhwar, Parihar, Chajra, Daha, Jhakkar, Joiya, Guraha, Bhatti, Massan, Bhutta, Sahu, Sial, Jangla, Thind, Samtia, Sehar, Sumra…
The Jats were divided into several tribes. In the Western plain (i.e., West of Lahore) excluding the salt range, and sub - montane tracts were to be found the Tahim, Butta, Langah, Sumra, Sipra and Hans
The Sammas rose to great power in Sind at about 1351 A.D., displacing the Sumras, who were not Jats and had achieved control of Lower Sind shortly after the death of Mahmud of Ghazna.
In Lower Sind however we become dimly aware of the existence in the eighth and ninth centuries of a tribal people, the Sumras, who shortly after the death of Mahmud Ghaznavi became quasi-independent rulers throughout the Multan region, even when it remained nominally incorporated in the Ghaznavid and Ghurid dominion and subsequently in the Delhi Sultanate. The Sumras were a dynasty of local origin, later claiming to be Rajputs as well as Arabs, and are clearly distinguishable from the pastoral-nomadic Jats or Mids. In fact, it could very well be that next to the Baluchi immigration from the west, the rise of the Sumras was a factor in pushing the Jats of Lower Sind northward.
..These episodes reflect the rivalry among different Rājpūt clans, especially after some converted to Islam. The Sūmras are among these, as they are said to be Soḍhā Rājpūts who converted to Islam under Ismāʿilī persuasion; after conversion, they changed their name from Soḍhā to Sūmra..
Soomra, Samma and Kalhora indigenous castes (locally known as Sammat) were further ashrafized. After conversion to Islam they intermarried with local Arab landowners and thus had acquired great influence and power. By furnishing Tuhfa-tul-Kiram and Beglar Namah, the two books on the history, as the reference, they reconstructed their genealogies to have roots in Arabs and in association with the Sayeds. Hence, the Soomras claimed to be Sumerian Arabs; Sammas, the descendants of Jamshed Abbasi of Persia, and Kalhoras traced their descent to Abbasid Khalifas
Soomra, Samma and Kalhora indigenous castes (locally known as Sammat) were further ashrafized. After conversion to Islam they intermarried with local Arab landowners and thus had acquired great influence and power. By furnishing Tuhfa-tul-Kiram and Beglar Namah, the two books on the history, as the reference, they reconstructed their genealogies to have roots in Arabs and in association with the Sayeds. Hence, the Soomras claimed to be Sumerian Arabs; Sammas, the descendants of Jamshed Abbasi of Persia, and Kalhoras traced their descent to Abbasid Khalifas
Soomra, Samma and Kalhora indigenous castes (locally known as Sammat) were further ashrafized. After conversion to Islam they intermarried with local Arab landowners and thus had acquired great influence and power. By furnishing Tuhfa-tul-Kiram and Beglar Namah, the two books on the history, as the reference, they reconstructed their genealogies to have roots in Arabs and in association with the Sayeds. Hence, the Soomras claimed to be Sumerian Arabs; Sammas, the descendants of Jamshed Abbasi of Persia, and Kalhoras traced their descent to Abbasid Khalifas