I appreciate your invitation to view your family tree and found it interesting as I've been aware of the "West Nissouri" Henshaws from my search for the family members of George Henshaw (1823-?) I've often wondered if there was a connection between the two families. I haven't been able to find much about George other then locating him and his family in the 1860 US census and that his name was listed on the marriage certificates of his children who, except for one, were all born in London. Have you found a link?
Thanks and best wishes,