Jane was born in England. Jane married Sir Thomas De Harcourt
, son of Sir Thomas Harcourt
and Maud Grey
, in 1406 in England. As a widow of her second husband, Jane was known as Dame Jane Harcourt ofBosworth. In 1450, she is sighted as procuring attacks on the Staffords of Grafton. This involved a feud which killed many members of both the Staffords and the Harcourts between the years 1448 and 1471. Jane's husband, Sir, died on 6 July 1420 in Stanton Harcourt, Oxfordshire, England, leaving her a widow. Jane married 2nd Sir Robert Strelley
before 1424 in England.