Chambré Brabazon Ponsonby married a second time on 23 October 1752, to Louisa, daughter of Henry Lyons of Belmont. They had one daughter, Sarah, who lived at Plas Newydd with Eleanor Butler (daughter of Walter Butler of Kilkenny Castle), where they were known as the Ladies of Llangollen. By his third wife, Mary, daughter of Sir William Barker, 3rd Baronet of Kilcooly Abbey, he was the father of Mary, who married Thomas Barton of Grove House, Fethard, and of Chambré Brabazon Ponsonby-Barker. Chambré Brabazon Ponsonby Chambré Brabazon Ponsonby (1720 – 20 February 1762) was an Irish Member of Parliament. He was the son
William Ponsonby, 2nd Earl of Bessborough 1765 jointly with Thomas Robinson, 1st Baron Grantham, until he resigned in 1766, his initial offer to resign having been refused. Upon William Ponsonby's death on 11 March 1793 his son, Frederick Ponsonby, succeeded to his titles. William Ponsonby was the son of Brabazon Ponsonby, 1st Earl of Bessborough, and his wife Sarah Margetson, and elder brother of John Ponsonby. On 5 July 1739 William married Lady Caroline Cavendish, eldest daughter of William Cavendish, 3rd Duke of Devonshire, who died in 1760 aged 40. They had three surviving children: Parkstead House, Roehampton, was built in 1750 for William Ponsonby, and