I have many of those surnames mentioned including Gosnell, Sheehan, Reeder. Many of the Gosnell's I have listed were living in Orford, Kent Co. Ontario.
Does anyone have a Sarah Gosnell b.1807 Sherkin Island, Cork, who married Thomas Hatch abt. 1825.
Sarah Gosnell parents were Thomas Gosnell & Mary Wolfe.

I also have 2 Fanny Gosnell's from Orford, but don't seem to match up with your dates, but very close.