Viscount Ranelagh is in Viscount Ireland.
In 1643 Roger Jones 1st Viscount Ranelagh [aged 54] died. His son Arthur [aged 33] succeeded 2nd Viscount Ranelagh. Katherine Boyle Viscountess Ranelagh [aged 27] by marriage Viscountess Ranelagh.
On 7th January 1670 Arthur Jones 2nd Viscount Ranelagh [aged 60] died. His son Richard [aged 28] succeeded Viscount Ranelagh. Elizabeth Willoughby Countess Ranelagh [aged 37] by marriage Viscountess Ranelagh.