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.