Rev. Joseph Emerson "married December 27, 1721, to Mary, the only daughter of the eccentric and Rev. Samuel Moody, of York, after a wedding sermon, by a relative, from the text, 'In the day of prosperity be joyful.'"
[Note: This story is related in several sources, none specifying the "relative" who preached, suggesting the basis is not yet discovered. This is the oldest source discovered so far.]