Question: When did Baldwin Ii, Count Of Hainaut's father die?
Answer: 17 July 1070

He was the younger son of Baldwin VI, Count of Flanders and Richilde, Countess of Mons and Hainaut. Baldwin VI (– 17 July 1070), also known as Baldwin the Good, was Count of Hainaut from 1051 to 1070 (as Baldwin I) and Count of Flanders from 1067 to 1070.