I would advise you to go to the CANNIFF Genforum site, and to find the entry for John Canniff and Mary Frost
"Looking for information about John Canniff and Mary Frost, both b. New York in the late 1700's. They were the parents of Caroline Rebecca Canniff b. 1820, who m. Isaac Meserole. Caroline d. in 1907 in Kings co., N.Y."
I believe you and the poster will find exchanging information to be helpful.