I have a Mitchell Raymo as the second husband of Margaret Denniston Mains. He was born 1813 in Wayne Co., Michigan. He is found in the 1850 census for Nankin Twp., Wayne Co., Michigan.
Also curious about spelling as I have a Archangel Rameaux as married to Warren John Fenton. They are the parents of Margaret's brother Samuel Denniston's second wife Rosanna Fenton. Samuel's first wife was Elizabeth Rameaux (1829-1846)