Joseph Pratt, born 1 Aug. 1648 at Saybrook, Conn. was the third son of Lt. William Pratt. He married twice. First he married Margery Parker, daughter of William and Margery Pritchard Parker, by whom he had five children. He then married Sarah Chapmann, daughter of the honorable Robert Chapmann, the first American settler. They had eight children.
Joseph was a large landholder in Pauatapaug Quarter, Hebron. He died 12 Aug. 1703, age 55 years.