There used to be a profile for "Constance Seaven Taylor" who lived in colonial Virginia. You could do an internet search for that name, and get a number of hits from the major online popular genealogies all with the same odd name. Constance Seaven Taylor. What an odd middle name, one might think. But one gets no explanation.
Until you finally locate a copy of her father's will, in which her father says, I give to my daughter Constance seaven head of catle."
Seaven is no longer her middle name!
Good sources can tell you things!