william hayn was my grdfather. he had 5 children. carolina hayn robinson, edith hayn chalk, ruth hayn wilson, william hayn, and my father john wesley hayn. ruth wilson and william hayn live in dallas texas and we live in san diego, ca. the other children died many years ago. i would be glad to provide you with any other info that you would like or put you in direct contact with my parents. i would be interested to know if others have von willenbrand's.