I am seeking information on Prudence Griswold Derby, daughter of Anna Morse Griswold and Unknown Griswold. Prudence married Unknown Derby and had a son, Daniel Griswold Derby, b. 14 June, 1817, Brownville, Jefferson County, New York, who stated,"My mother's maiden name was Prudence Griswold, and she was a near relative of Governor Griswold of Connecticut. Her mother's maiden name was Anna Morse. She was aunt to Samuel F.B. Morse, of electric telegraph fame." Daniel Griswold traveled and lectured on phrenology for 50 years, and died at High Point, Moniteau County, Missouri, sometime after 1891. He was sometimes referred to as "Doctor" although he held no degree. I have not been able to find his father's name; it is not mentioned in the information I have.