I've previously written about John Ellis here. That post gets plenty of hits. He's a very popular guy.
1. John Ellis born about 1620 and died 23 March 1676/7 at Sandwich, Massachusetts. He married before August 1644 Elizabeth Freeman, born 11 April 1624 at Billinghurst, Sussex, England and died before April 1714, daughter of Edmund and Bennett (Hodsoll) Freeman. John was known at Lt. John Ellis. He had eleven children, the maternity of the eldest is in some doubt: John, Elizabeth, Bennett, Mordecai, Deborah, Joel, Matthias, Manoah, Freeman, Gideon, and William.
2. Elizabeth Ellis born about 1646 at Sandwich, Massachusetts and died there about 1677. She married about 1664 Samuel Briggs, born about 1638 at Sandwich and died after 11 February 1714/5 at Rochester, Massachusetts, son of John and Katherine (---) Briggs. Elizabeth and Samuel had six children: Elizabeth, Bennett, Ebenezer, Samuel, Hannah, and John.
“Lt. John and Elizabeth (Freeman) Ellis of Sandwich, Mass.” by Lydia B. Brownson and Maclean W. McLean New England Historical & Genealogical Register 119 (1965):161-173.
The Great Migration: Immigrants to New England 1634-1635 by Robert Charles Anderson, George F. Sanborn, Jr., and Melinde Lutz Sanborn (Boston, NEHGS, 2001), II:576-82. [Freeman]
John Briggs of Sandwich, Massachusetts by E.A. Hannibal (1962).