Introduction
The name of Hazrat Abu Ubaidah (ra) bin Jarrah was Aamir bin Abdullah. His father’s name was Abdullah bin Jarrah. Hazrat Abu Ubaidah (ra) was more commonly by known his title which was the name of his grandfather, Jarrah. His mother’s name was Umaimah bint Ghanam. He belonged to the Banu Harith bin Fihr tribe of the Quraish.
(Ibn Hajar al-Asqalani, al-Isabah fi Tamyiz al-Sahabah, Vol. 3, Amir bin ‘Abd-Allah [Beirut, Lebanon: Dar al-Kutub al-‘Ilmiyyah, 2005] 475)