According to http://minerdescent.com/2010/06/07/john-brown-sr/, Mary Brown, daughter of John Browne Sr. and Dorothy Beauchamp, was born 1614 in Glencairn, Dumfrieshire, Scotland, married Capt. Thomas Willett on 6 July 1636 in Plymouth. She died on 8 January 1669/70 in Little Neck RI. There's no explanation of her being born in Scotland which seems anomalous. Some sources say that she died in Wannamoisett, Bristol, RI and was buried in Little Neck Cemetery, Riverside, Bristol, RI

Their twelve children were:

1. Mary WILLETT,
2. Martha WILLETT,
3. John WILLETT,
4. Sarah WILLETT,
5. Rebecca WILLETT,
6. Thomas WILLETT,
7. Esther WILLETT,
8. James WILLETT,
9. Hezekiah WILLETT,
10. David WILLETT,
11. Andrew WILLETT,
12. Samuel WILLETT.

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Leftover material:

Source for Mary Brown as daughter of John Browne of Salem, Taunton, and Rehoboth is: http://books.google.com/books?id=QKorAAAAYAAJ&lpg=PA39&ots=K6_g_Oybpa&dq=John%20Browne%20Taunton%20%20Widow%20Walker&pg=PA39#v=onepage&q=John%20Browne%20Taunton%20%20Widow%20Walker&f=false

Mary BROWN was born on 24 March 1637 in Watertown, Middlesex,Massachusetts. Sources: 1. Anderson, R.C. "The Great Migration Begins" pp.255-257. Parents: John BROWN and Dorothy KENT.

Excerpted from:

http://www.theharmons.us/harmon_t/b239.htm#P73716

note: The evidence is not convincing that her parents were John Brown and Dorothy Kent. Also, the conflicting birth dates need resolving. LDC

DEATH:

Thomas Clapp Cornell, Adam and Anne Mott: their ancestors and their descendants (N.p.: A. V. Haight, 1890), p. 251.