BG Daniel Morgan is project protected. According to their Find A Grave entries, Willoughby was Daniel's illegitimate son. I was doubtful, but still intrigued. The Find A Grave memorial incorrectly links Willoughby as a son of Abigail Curry, Daniel's wife. It also incorrectly links a son, Willoughby Daniel Morgan. This son was born in North Carolina, a place Col Willoughby does not seem to have lived. He was in Wisconsin and in the Army until his death. His will instructs that all his property be sold (he and a partner had land in Missouri) and leaves his military apparatus and watch to a friend. No mention of a hypothetical son in North Carolina.
The the really cool thing I found, which leads me to think that Willoughby may have just been the son of the Great BG Daniel is a newspaper article. It was a reprint from the New England Magazine in 1832.
"Colonel [Willoughby] Morgan was the son of that brave officer of the revolution, familiarly known as 'Rifle morgan' or 'Old Rifle.' He inherited all his fathers courage and more than his talents..."
"Certain circumstances, which happened in his family, and which need not be specified here, proved a source of affliction to Colonel Morgan through life. - He was constantly suffering for the sins of others; Though innocently implicated in the matters alluded to, he imagined himself a stigmatized man, and at times, his mental pangs were very acute This morbid sensibility had a very important influence on his actions and conversation. He was scarce ever, unless where his military duties were concerned..."
Sounds like those circumstances may have been his illegitimacy to me. What do you think? I don't know what project is protecting this profile.