Hi Dave, I see that this is a old request and you may now have all the information that you are looking for. However, I do have information on Henry Ingersoll Thorp(e) that goes back to his father and mother who were both born in New York State. At that time their name was spelled Thorpe. His wife was Amanda E. Canniff. I also have information on the Ingersolls going back to the US. You probably know they were all United Empire Loyalists.
I am not related to him but I became interested in him when I bought his house in Picton a couple of years ago. During the time he lived here (1860-1869) he was, or became, the High Sheriff of Prince Edward County. He died at the age of 46 in 1869. I know the transition from shopkeeper to Sheriff sounds a bit odd, but it may be because his brother-in-law was Walter Ross, who was a very successful business man and financier. Walter Ross was also the Mayor of Picton 4 times, the representative for the Upper Canada Assembly and then the member of parliament upon Confederation.
Your great grandmother Annie would have lived in my house from 1860 to 1871, along with her siblings William Canniff Thorp and Walter Ross Thorp.
Henry bought the newly subdivided lot in 1860, so I can't be sure how quickly the house was built. It does show up on an 1863 map of Picton.
I hope this is of interest to you and please let me know if I can share any more of the other genealogy on this family that I gathered in my research.