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The name of Umar ibn al-Khattab's sister was Fatimah bint al-Khattab.
Umar Ibn Al Khattab (RA)
Umar Ibn al Kattab was born in Mecca which is in kingdom Saudi Arabia now with the same name.
The 2nd Caliph Umar Ibn Al-Khattab.
Abu Bakr, Umar ibn al-Khattab, Uthman ibn Affan, and Ali ibn Abi Talib.