Who married Floris III, Count of Holland?

Floris III (c. 1141 – August 1, 1190) was the count of Holland from 1157 to 1190. He was a son of Dirk VI and Sophia of Rheineck, heiress of Bentheim.

Ada of Scotland (died after 1206), also known as Ada of Huntingdon, was a member of the Scottish royal house who became Countess of Holland by marriage to Floris III, Count of Holland.