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- [S144] Vital Records of Chelmsford, Massachusetts, to the end of the year 1849, ((Salem, MA: The Essex Institute, 1914)), p. 140.
- [S1645] William Barker, Middlesex Co, MA probate file no. 1038 (1704).
- [S144] Vital Records of Chelmsford, Massachusetts, to the end of the year 1849, ((Salem, MA: The Essex Institute, 1914)), p. 244.
- [S4229] John Heald, Middlesex Co, MA probate file no. 11053 (1662).
- [S142] Concord, Massachusetts Births, Marriages and Deaths, 1635 - 1850., ((Boston: T. Todd, printer, 1895)).
p. 64. (Concord Registers - Book II)
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