Theresa Dorothy Maynard (née Healy) was born on March 13, 1937, in New York City, New York. Theresa married George on September 7, 1957, and they had three children: George R. Maynard Jr.; John Thomas Maynard; and Timothy Alan Maynard.

Maynard was employed at the FSi Security Badge Office for the Jim Reno Security Office. Maynard had previously worked as a bank teller and worked in the Roper Hospital pharmacy for 28 years.