Original sentence: When stadholder William II died, in 1660 followed by his wife, her husband became one of the guardians of the 10-year old William, the "Child of the State", who played with Catharina's sons
Edited sentence: When stadholder William II passed away, in 1660 followed by his wife, her husband became one of the guardians of the 10-year old William, the "Child of the State", who played with Catharina's sons