In 1643 Roger Jones 1st Viscount Ranelagh (age 54) died. His son Arthur Jones 2nd Viscount Ranelagh (age 33) succeeded 2nd Viscount Ranelagh. Katherine Boyle Viscountess Ranelagh (age 27) by marriage Viscountess Ranelagh.

On 07 Jan 1670 Arthur Jones 2nd Viscount Ranelagh (age 60) died. His son Richard Jones 1st Earl Ranelagh (age 28) succeeded Viscount Ranelagh. Elizabeth Willoughby Countess Ranelagh (age 37) by marriage Viscountess Ranelagh.