I was not sure if you have this information but it may hold something you can use. (Notice the spelling of McConnell's sister's name.)
Syracuse Herald February 18, 1919
M'CONNELL MARRIED JUST BEFORE SAILING
Information was received to-day that Lieut. James McConnell, the Medal of Honor man who died of wounds last July, left a widow, Mrs. Susan H. McConnell, No. 308 Walnut street, Marshall, Ill.This information was gained through his sister, Mrs. M.G. Van Dewalker, No. 101 Alexander avenue.
It appears that Lieutenant, then Sergeant, McConnell was married shortly before he sailed for France. Mrs. McConnell was notified of his death months ago.