Sgt. Jacob French was born on 16 Jan 1639/40 in Cambridge, Middlesex Co., Massachusetts. He died on 20 May 1713 in Billerica, Middlesex Co., Massachusetts. He was married to Mary Champney on 26 Sep 1665 in Cambridge, Middlesex Co., Massachusetts. "Clark and Worth..." says 20 Sept. 1665.

Mary Champney was born in Nov 1639 in Cambridge, Middlesex Co., Massachusetts. She died on 1 Apr 1681 in Billerica, Middlesex Co., Massachusetts. Children were:

i. Jacob French Jr. was born on 20 Feb 1666/67 in Billerica, Middlesex Co., Massachusetts. He died about 1700.
ii. William French was born on 18 Jul 1668 in Billerica, Middlesex Co., Massachusetts. He died in 30 Sep 1723. He was married to Sarah Danforth on 22 May 1695 in Billerica, Middlesex Co., Massachusetts.
iii. Mary French was born on 6 Oct 1669. She died on 12 Nov 1669.
iv. John French was born on 6 Oct 1670 in Billerica, Middlesex Co., Massachusetts. He died on 3 Dec 1670 in Billerica, Middlesex Co., Massachusetts.
v. Joseph French was born on 5 May 1673 in Billerica, Middlesex Co., Massachusetts. He died on 25 Sep 1676 in Cambridge, Middlesex Co., Massachusetts.
vi. Jabez French was born on 16 Sep 1674 in Billerica, Middlesex Co., Massachusetts. He died on 16 Sep 1674 in Billerica, Middlesex Co., Massachusetts.
vii. Mary French.
viii. Hannah French was born on 23 Oct 1677 in Billerica, Middlesex Co., Massachusetts. She died on 23 Oct 1677 in Billerica, Middlesex Co., Massachusetts.
ix. Elizabeth French was born on 8 Jun 1679 in Billerica, Middlesex Co., Massachusetts.
x. Sarah French was born on 7 Mar 1681/82 in Billerica, Middlesex Co., Massachusetts. She died on 16 Jun 1761.

Sgt. Jacob French married second Mary Converse on 30 Jul 1685.