Reginar II, Count of Hainaut

Reginar II (890–932) was Lotharingian magnate who was active from approximately 915 to 932. He was brother of Duke Gilbert of Lotharingia, who died at the Battle of Andernach in 939, and because his son and grandson claimed it, he probably already personally held the fort of Mons in Hainaut as the seat of a county.