Hi Jean,
Thanks for writing!
Just for the record, your aunt Marie had three sons with Richard Trowbridge: Richard Alex (b.5 Jun 1945), David George (my father, b.5 May 1947) and William John (b.14 Jul 1951).
Richard and David were born in Detroit; William was born in Kendallville, IN. All three went to high school in Elkhart, IN. Richard still lives in Elkhart; David lives in Tucson, and William lives in St. Louis.
Cheers,
Geoff Trowbridge