All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad is His slave and Messenger.
The scholars of biography and history stated that Hamzah had Ya’la, ‘Aamir, and their mother was Bint Al-Millah ibn Maalik ibn ‘Ubaadah Al-Ansaariyyah from the tribe of 'Aws, and ‘Umaarah, and his mother was Khawlah bint Qays ibn Qahd Al-Ansaariyyah, and ‘Umaamah and her mother was Salmah bint ‘Umays Al-Khath’amiyyah and she was the sister of Asmaa’ bint ‘Umays who was the wife of Ja’far ibn Abi Taalib .
Among his grandchildren were ‘Umaarah, Al-Fadhl, Az-Zubayr, ‘Uqayl and Muhammad who were the children of his son Ya’la.
Allaah Knows best.