Nielsen Hayden genealogy
Family: John Spencer / Rebecca Hayward (F372)
m. Abt 1665-
Male
John Spencer
Birth Abt 1636 Death 3 Aug 1682 Haddam, Middlesex, Connecticut 
Burial Marriage Abt 1665 [1, 2, 3] Father Jared Spencer | F439 Group Sheet Mother Hannah | F439 Group Sheet
Female
Rebecca Hayward
Birth 17 Aug 1648 Windsor, Hartford, Connecticut Death Bef 1682 Burial Father Robert Howard | F804 Group Sheet Mother Lydia Kilbourne | F804 Group Sheet
Female
+ Grace Spencer
Birth Bef 24 Sep 1676 Haddam, Middlesex, Connecticut Baptism 24 Sep 1676 Haddam, Middlesex, Connecticut Death 12 May 1714 Colchester, New London, Connecticut Burial Spouse John Day | F186 Marriage 21 Jan 1696 Hartford, Hartford, Connecticut
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Sources - [S389] Donald Lines Jacobus, "The Four Spencer Brothers -- Their Ancestors and Descendants." The American Genealogist 27:79, April 1951.
- [S101] The Great Migration Begins: Immigrants to New England, 1620-1633, Volumes 1-3 and The Great Migration: Immigrants to New England,1634-1635, Volumes 1-7, by Robert Charles Anderson. Boston: New England Historic Genealogical Society, 1996-2011., "by 1666".
- [S906] The Ancestry of Lorenzo Ackley and His Wife Emma Arabella Bosworth by N. Grier Parke II, edited by Donald Lines Jacobus. Woodstock, Vermont: The Elm Tree Press, 1960., "about 1664".
- [S389] Donald Lines Jacobus, "The Four Spencer Brothers -- Their Ancestors and Descendants." The American Genealogist 27:79, April 1951.