Isaac married Mary 'Mayflower Passenger' NORRIS on 4 Nov 1611 in Leyden, , South Holland, Netherlands. Mary (daughter of Sir Edward NORRIS) was born in 1587-1591 in Newberry, Berkshire, England; died on 25 Feb 1621 in Plymouth, Plymouth County, Massachusetts, United States of America; was buried in Plymouth, Plymouth County, Massachusetts, United States of America. [Group Sheet] [Family Chart]

1. Bartholomew ALLERTON was born in 1612 in Leyden, Leyden, South Holland, Netherlands; died on 19 Feb 1659 in Bramfield, Suffolk, , England.
2. Remember ALLERTON was born about 1614 in Leyden, Holland; died about 1652 in Marblehead, Essex, Massachusetts, United States.
3. Mary CUSHMAN was born in Jun 1616 in Leiden Municipality, Zuid-Holland, Netherlands; died on 28 Nov 1699 in Plymouth, Plymouth County, Massachusetts, United States of America; was buried in Plymouth, Plymouth County, Massachusetts, United States of America.
4. Child ALLERTON was born on 18 Jan 1617 in Leyden, South Holland, Netherlands; died in 1620 in Netherlands; was buried in Leiden Municipality, Zuid-Holland, Netherlands.
5. Baby ALLERTON was born on 22 Dec 1620 in Plymouth, Plymouth County, Massachusetts, United States of America; died on 22 Dec 1620 in Plymouth, Plymouth County, Massachusetts, United States of America; was buried in Plymouth, Plymouth County, Massachusetts, United States of America.

Isaac married Fear\Patience BREWSTER in 10 July 1623 or May 22 1627 in Plymouth, Plymouth, Massachusetts, USA. Fear\Patience was born in 1603-1606 in Scrooby, Nottinghamshire, England; died on 12 Dec 1634 in Plymouth, Massachusetts, United States. [Group Sheet] [Family Chart]

1. Joanna ALLERTON was born in Jan 1620 in Plymouth, Plymouth, Massachusetts, USA; died on 14 May 1680 in Connecticut.
2. Isaac ALLERTON, II was born in 1628 in Plymouth, Plymouth County, Massachusetts, United States of America; died in 1702 in Westmoreland County, Virginia, United States of America.
3. Rose ALLERTON was born in 1633 in Carleton Manor, Yorkshire, , England; died in 1712 in Westmoreland, Virginia, United States.

Isaac married Joanna SWINNERTON about 1644 in Marblehead, Essex, Massachusetts, Colonial America. Joanna was born on 2 Feb 1605 in Shaft, London, , England; died on 14 May 1680 in New Haven, New Haven, Connecticut, United States. [Group Sheet] [Family Chart]

Edward married Rose DAVIS on 14 Feb 1579 in St Dionis Backchurch, London, England. Rose was born in 1559 in St Peter Parish, London, England; died on 23 Jun 1596 in St Dunstan in the West, London, England. [Group Sheet] [Family Chart]