On 17 Aug 1769 when Joanna was 23, she married
Lot Keen (48022) , son of
Isaac Keen (30191) (ca 1700-ca 1787) &
Lydia Jones (42677) (24 Feb 1711/2-bef 16 Feb 1773), in Marshfield, MA.
Born 6 Mar 1742/3 in Pembroke, MA. Lot died in Pembroke, MA on 17 Mar 1826. Buried in Pine Grove Cemetery, East Pembroke.