John Baker Jr. was born on 31 May 1672 in Yarmouth, Barnstable Co., Massachusetts. He died on 20 Mar 1760 in Yarmouth, Barnstable Co., Massachusetts. He was married to Hannah Jones on 13 Apr 1699.

Hannah Jones was born about 1675. Children were:

i. Hannah Baker was born on 20 Jan 1699 in Yarmouth, Barnstable Co., Massachusetts.
ii. Jeremiah Baker was born on 8 Feb 1701/2 in Yarmouth, Barnstable Co., Massachusetts.
iii. John Baker was born on 18 Oct 1704 in Yarmouth, Barnstable Co., Massachusetts.
iv. Stephen Baker was born on 7 Jul 1706 in Yarmouth, Barnstable Co., Massachusetts.
v. Jesse Baker was born on 25 Aug 1708 in Yarmouth, Barnstable Co., Massachusetts.
vi. Rebecca Baker was born on 5 Apr 1710 in Yarmouth, Barnstable Co., Massachusetts.
vii. Seth Baker was born on 27 Apr 1712 in Yarmouth, Barnstable Co., Massachusetts.
viii. Peter Baker was born on 14 Jan 1713/14 in Yarmouth, Barnstable Co., Massachusetts. He died on 27 Feb 1788.
ix. Elsey Baker.
x. Sarah Baker was born on 15 Oct 1717 in Yarmouth, Barnstable Co., Massachusetts. She was married to Ezekiel Burgess on 8 Sep 1736.
xi. David Baker was born on 16 May 1719 in Yarmouth, Barnstable Co., Massachusetts. He died on 11 Sep 1768.
xii. Thankful Baker was born on 24 Jan 1720/21 in Yarmouth, Barnstable Co., Massachusetts.
xiii. Lot Baker was born on 16 Jan 1721/22 in Yarmouth, Barnstable Co., Massachusetts.
xiv. Bethiah Baker was born on 23 Oct 1723 in Yarmouth, Barnstable Co., Massachusetts.
xv. Mercy Baker was born on 14 Nov 1726 in Yarmouth, Barnstable Co., Massachusetts.

The name of John Baker Jr.'s second wife was Sarah.