Elizabeth Willoughby was born on an unknown date to Francis Willoughby, 5th Baron Willoughby (1614-1666) and Elizabeth Cecil (c1606-1661) and died 1 August 1695 Chelsea, Greater London, England, United Kingdom of unspecified causes. She married Richard Jones, 1st Earl of Ranelagh (1641-1712) 28 October 1662 in Hunsdon, Hertfordshire, England, United Kingdom.
|Offspring of Richard Jones, 1st Earl of Ranelagh and Elizabeth Willoughby (-1695)|
|Elizabeth Jones (1665-1758)|
|Catherine Jones (1673-1740)|
|Frances Jones (1674-1715)||1674||19 February 1715 Hampton Court Castle, Herefordshire, England, United Kingdom||Thomas Coningsby, 1st Earl of Coningsby (1656-1729)|
|Edward Jones (1675-1678)|