William married Lady Elizabeth Tresham on 6 Jan 1593 in Hornby Castle, Lancashire, England. Elizabeth was born on 8 Nov 1573 in Rushton, Northamptonshire, England; was christened on 15 Nov 1573 in Rushton, Northamptonshire, England; died on 2 Jan 1648 in Newby, Yorkshire, England; was buried in Jan 1648 in Great Hallingbury, Essex, England. [Group Sheet] [Family Chart]

1. William Parker was born in 1614 in Marlborough, Wiltshire, England; died on 3 Oct 1684 in Scituate, Plymouth, Massachusetts, British Colonial America; was buried on 28 Jul 1673 in London and Middlesex Mm, Middlesex, England.
2. Sir William Parker, II was born in 1590 in Morley, Norfolk, England; died in 1690 in Morley, Norfolk, England.
3. Nun Frances Parker was born in 1595 in Great Hallingbury, Essex, England; was christened on 11 May 1603 in Chelmsford, Essex, England.
4. Elizabeth Parker was born about 1597 in Hornby Castle, Yorkshire, England.
5. Henry Parker was born in 1602 in Newby, Yorkshire, England; was christened on 21 Mar 1622; died on 10 May 1655 in Great Hallingbury, Essex, England; was buried in May 1655 in Great Hallingbury, Essex, England.
6. Catharina Parker was born in 1605 in Hornesby Castle, Cheshire, England; died in 1645 in England.
7. Charles Parker was born in 1608 in Newby, Yorkshire, England; died in 1622.