Question: John William Friso is the most recent common ancestor of what
Sentence (from "Dutch monarchs family tree"): By virtue of his marriage to Mary II of England, Prince William III, himself a grandson of Charles I of England, became King of England 1689–1702 (jointly with Mary II until her death in 1694) following the overthrow of his uncle and father-in-law James II of England in the Glorious Revolution.
Relevant evidence: No