I am a descendant of Guillaume Toupin, would you please tell me where you found this information on his parents and siblings? I am very excited that you have found this information.
When I connected to the world tree all this information came up on my tree. So it wasn't me. It was somebody else that did this research. So I was also excited when I found out this information. My grandmother was a Toupin. Her parents came from Canada and settled in Troy NY. I wonder if we share any DNA.