On 03 Jul 1806 William Abdy 7th Baronet (age 27) and [his illegitimate sister-in-law] Anne Wellesley Lady Abdy (age 18) were married at Hyde Park Corner; this is possibly Apsley House Hyde Park Corner. She by marriage Lady Abdy of Felix Hall in Kelveden in Essex. She the illegitmate daughter of Richard Wellesley 1st Marquess Wellesley (age 46) and Hyacinthe Gabrielle Roland Marchioness Wellesley (age 40).

In Oct 1812 Edward John Walhouse aka Littleton 1st Baron Hatherton (age 21) and Hyacinthe Mary Wellesley Baroness Hatherton (age 23) were married. She the illegitmate daughter of Richard Wellesley 1st Marquess Wellesley (age 52) and Hyacinthe Gabrielle Roland Marchioness Wellesley (age 46).

On 16 Jul 1816 Charles Cavendish-Bentinck (age 35) and [his illegitimate sister-in-law] Anne Wellesley Lady Abdy (age 28) were married. She the illegitmate daughter of Richard Wellesley 1st Marquess Wellesley (age 56) and Hyacinthe Gabrielle Roland Marchioness Wellesley (age 50). He the son of William Cavendish-Bentinck 3rd Duke Portland and Dorothy Cavendish 3rd Duchess Portland.

On 16 Aug 1832 [his son-in-law] Charles Evelyn Pierrepont (age 26) and [his daughter] Emily Littleton were married. He the son of Charles Herbert Pierrepont 2nd Earl Manvers (age 54) and Mary Laetitia Eyre Countess Manvers (age 47).

In 1841 [his son] Edward Richard Littleton 2nd Baron Hatherton (age 25) and [his daughter-in-law] Margaret Percy Baroness Hatherton (age 28) were married. She the daughter of George Percy 5th Duke Northumberland (age 62) and Louisa Harcourt Stuart-Wortley-Mackenzie (age 59).

In 1852 Edward John Walhouse aka Littleton 1st Baron Hatherton (age 60) and Caroline Hurt Baroness Hatherton (age 42) were married. She by marriage Baroness Hatherton.