This is a link to the St. Vincent's roster if you haven't seen it before. I glanced and it seems these kids are listed. I was in St. Vincent's in the 1950's, and don't believe the Engels' were there at that time, but I do remember going to school with a Kenny Engel perhaps St. Helen's, in Saginaw. Sorry I can't be of more help, but it's been a long time. I will check with my brother and see if he remembers anything. Good luck.