Rev. William Meyrick was born circa 1546 in Llanlleschydd St. David's, Pembrokeshire, Wales to John ap Meyrick (c1513-1538) and Sage verch Griffith (1521-1554) and died 1593 St. David's, Pembrokeshire, Wales of unspecified causes. He married Janet Verch Ienen (1550-1589) 1562 JL in Pembrokeshire, Wales.
Children
| Name | Birth | Death | Joined with |
| Richard Meyrick (1563-) | |||
| John Meyrick (1579-1650) | 1 January 1579 St. David, Pembrokeshire, Wales | 26 June 1650 Roxbury, Suffolk County, Massachusetts | Dorothy Bishop (1570-1650) |
| Owen Meyrick (1581-) | |||
| Robert Meyrick (1583-) | |||
| Janet Meyrick (1585-) | |||
Siblings
| Name | Birth | Death | Joined with |
| William Meyrick (1546-1593) | 1546 Llanlleschydd St. David's, Pembrokeshire, Wales | 1593 St. David, Pembrokeshire, Wales | Janet Verch Ienen (1550-1589) Maud Powell (c1555-) Joan Young (c1560-) |