Tags: Noble.
Adelaide of Holland Countess of Hainaut (Dutch: Aleide (Aleidis) van Holland; c. 1230 – buried 9 April 1284) was a daughter of Floris IV Count of Holland and Matilda of Brabant. She was also a sister of William II Count of Holland and King of Germany. She acted as regent for her nephew Count Floris V during his minority.