I remember the jingle “James G. Blaine, James G. Blaine, the continental liar from the State of Maine”. I cannot remember who said it or about what, or whether there was anything to it.
Cleveland was still a bachelor when he ran for President. There is some uncertainty whether he was really the father of the illegitimate child. Apparently the mother had had affairs with several men but the others were all married so Cleveland agreed to take responsibility. I think the child later grew up to be a doctor. It would be interesting to find a descendant and do a DNA test to determine whether Cleveland was really the father.
Apparently James G. Blaine's first child was born three months after their wedding.