William Byrchard was born 1570 in Witham, Essex, England, United Kingdom to Robert Byrchard (1535-1586) and Joan Chamberlain (1540-1602) and died circa 1634 Fairstead, Essex, England, United Kingdom of unspecified causes. He married Catherine Finch (1574-1635) 1594 in Great Leighs, Essex, England, United Kingdom.
Children
| Name | Birth | Death | Joined with |
| Thomas Birchard (1595-c1684) | 12 October 1595 Fairstead, Essex, England, United Kingdom | 1684 Norwich, New London County, Connecticut, United States | Mary Robinson (1596-1655) |
| William Birchard (1598-) | |||
| Richard Birchard (1600-) | |||
| Mary Birchard (1606-) | |||
| Katherine Birchard (1608-) | |||
Siblings