About Thomas Henry Wiggin
Birth records show his mother as Joanna, but death records show Louisa. I believe Joanna died shortly after Thomas's birth (if not due to his birth) and he was raised by Louisa, thus his death record shows the mother that raised him. A problem with that is it looks like Hugh is with Louisa in the 1860 & 1865 MA Census. Alternate theory is that Joanna and Louisa are the same person.