She was one of the eleven children of Lady Mary (born Yate) and Sir Robert Throckmorton (1662–1721), third baronet, of Coughton Court in Warwickshire.

She chose to meet and touch the Old Pretender at St Germain en Laye in the hope of relief in 1704.

She and her sister Catherine were clothed at the convent on 29 August 1713 and Elizabeth was professed the following year.

After that she served as procuratrix until 1752, when she was reelected prioress, remaining in office till her death at the convent on 4 April 1760.

[2] In 1729 her brother Sir Robert Throckmorton, 4th Baronet, commissioned four paintings from Nicolas de Largillière.