Thomas Gerard was born on December 10, 1608 in Ashton-in-Makerfield, Lancashire, England. He was christened on December 10, 1608 at Winwick Parrish, New Hall, Lancashire, England. Around 1629 he married Susannah Snowe at St. Clement's Manor, St. Mary's County, Maryland.
According to information from Katherine Snow [I am looking into this] Thomas Gerard was banished from Maryland. He went to Virginia where he held large land holdings in Westmoreland County.
Thomas Gerard remarried Rose after wife Susannah Snowe died but requested to be buried by former wife Susannah in Maryland in his will.