It was late 1999 or early 2000 we addressed Gaspard's origin. It has been a very long time since my last visit to this forum.
Have you read Lucas Warden's posting of 08/18/2000? He seems to have come up with some new version of Gaspard's father. There seems to be no subsequent posting on his suggestion. I will certainly research this possiblity on my ancestry.com membership, since it is an "international subscription".