Explanation

Abu Jahal’s actual name was Amr ibn Hisham 

he was commonly known as Abu Hakam (“Father of Wisdom”)

He belonged to the Sons of Mahzum clan of the tribe of Quraysh in Makkah.

Abu Jahal was not a real uncle of the Prophet (ﷺ) [not his father’s real brother] but his father’s cousin.

Cause of death is Beheaded at the Battle of Badr

Known for being the enemy of Muhammad

Note:
in some question, the spelling was written as Amr, Amer, Umer, Omer