Sources & Information:
Ancestry.com: Trees > OneWorldTree| > Watson Ellis gives birth Mar 1810, Plymouth, MA., USA. Died in Plymouth no date given. Parents as Francis Ellis and Joanna Briggs.
Ancestry.com: 1870 United States Federal Census shows Watson Ellis birth abt. 1810, age 60, born in MA., home in 1870 Plymouth, Plymouth, MA., White, Male, Post Office South Plymouth, Household Names as Watson Ellis, age 60, Lois Ellis, age 60 and Rufus Ellis, age 34.