Hazrat Ali (ra) had three brothers: Talib, Aqeel and Ja‘far, and two sisters: Umm-e-Hani and Jumanah. Aside from Talib and Jumanah, all of them accepted Islam.
(Tarikh al-Khamis, Vol. 1, pp. 295-297; Vol. 2, p. 421, Dar al-Kutub al-Ilmiyyah, Beirut, 2009)