Jan van Couwenhoven
Jan was born in 1440 in Castle Kouwenhoven, Brabant Province.  He died about 1515 in Schoonhoven, Province of Utrecht, Holland.  He was buried in Schoonhoven, Province of Utrecht, Holland.

 Willem Van Kouwenhoven
Willem was born in 1468 in Schoonhoven, Province of Utrecht, Holland.  He died about 1543 in Schoonhoven, Province of Utrecht, Holland.  He was buried in Schoonhoven, Province of Utrecht, Holland.

 Jan Van Kouwenhoven