Apsley House, Number One London, is the Wellington Museum, the 1st Duke's residence for several decades and now repository of his collections of paintings and relics of his career as a military and political hero, administered by English Heritage.
The website describes the exhibition: "In the 170-years since his death, the Duke’s reputation as a great military strategist and statesman has tended to overshadow his reputation during his lifetime, which was that he was something of a ‘ladies’ man’. Through letters, portraits and much more, on loan from public and private collections, Wellington, Women and Friendship presents an intimate picture of a very public life; revealing Wellington's social circle, his marriage and how his friendships with women could sometimes provoke rumour and gossip."
The tale is well known of young Wellesley's 1793 proposal to Kitty Pakenham in Dublin, a proposal her family refused since Wellesley's prospects were not encouraging. He pursued his military career, and nine years later, after his successes in India, he apparently felt obligated to renew his suit, even though the two had not corresponded in all that time.
They were married in Dublin in 1806, had two sons, though they were often apart when he was fighting elsewhere. It was no secret in Britain that the marriage was a disappointment to him. Kitty was simply unsuited to make herself the kind of companion he desired.
Below, left, Georgiana Lennox; right, Niece Priscilla Wellesley-Pole, later Lady Burghersh, then Countess Westmorland.
These ladies undoubtedly enjoyed attention from the duke, and there were many others not included in the exhibition, at least the parts I saw. The nature of his attentions will have to be left to either future discovery or your imagination.
Back to the exhibition: Below left, Anne Wellesley, Countess of Mornington (1741-1831), mother of Arthur Wellesley and his five siblings, as painted by his niece Priscilla; right, 1st Duke of Wellington and his daughter-in-law, Elizabeth, Lady Douro, of whom he was particularly fond, pictured c. 1844.