Catherine Walmesley Baroness Petre and Stourton was born to Bartholemew Walmesley.
In 1706 Thomas Petre 6th Baron Petre [aged 73] died. His son [her future husband] Robert [aged 17] succeeded 7th Baron Petre. Catherine Walmesley Baroness Petre and Stourton by marriage Baroness Petre.
On 1st March 1712 Robert Petre 7th Baron Petre [aged 23] and Catherine Walmesley Baroness Petre and Stourton were married.
On 22nd March 1713 [her husband] Robert Petre 7th Baron Petre [aged 24] died of smallpox. His son Robert succeeded 8th Baron Petre.
On 2nd April 1733 Charles Stourton 15th Baron Stourton [aged 31] and Catherine Walmesley Baroness Petre and Stourton were married.
On 24th March 1744 Thomas Stourton 14th Baron Stourton [aged 76] died without issue. His nephew [her husband] Charles [aged 42] succeeded 15th Baron Stourton. Catherine Walmesley Baroness Petre and Stourton by marriage Baroness Stourton.
On 11th March 1753 [her husband] Charles Stourton 15th Baron Stourton [aged 51] died without issue. His brother [her brother-in-law] William [aged 48] succeeded 16th Baron Stourton. Winifrede Howard Baroness Stourton [aged 26] by marriage Baroness Stourton.
On 31st January 1785 Catherine Walmesley Baroness Petre and Stourton died.