Charles Arbuthnot was known to Wellington, as he had been a strong supporter of Wellington's younger brother Henry during his divorce, and it is possible Wellington had met, or at least heard of, Mrs Arbuthnot—she was a first cousin to his favourites the Burghersh family.
He fell from favour when the Frenchman Esmé Stewart, Sieur d'Aubigny, first cousin of James's father Lord Darnley, and future Earl of Lennox, arrived in Scotland and quickly established himself as the first of James's powerful male favourites.
He passed over the claims of his half-sisters and, at last, settled the Crown on his first cousin once removed, the 16-year-old Lady Jane Grey, who on 21 May 1553 had married Lord Guilford Dudley, a younger son of the Duke of Northumberland.
Her godparents were Duke Gustav of Mecklenburg-Schwerin (her paternal great-great-uncle, for whom Prince Albert stood proxy); The Duchess of Saxe-Meiningen (for whom her great-aunt Queen Adelaide stood proxy); and The Hereditary Grand Duchess of Mecklenburg-Strelitz (her first cousin once-removed, for whom her mother The Duchess of Cambridge stood proxy).
Her godparents were The Hereditary Grand Duke of Mecklenburg-Strelitz, her first cousin once-removed by marriage; The Duchess of Orléans (Hélène, for whom The Queen's mother The Duchess of Kent stood proxy); and The Duchess of Cambridge.
In the following years, he had a scandalous affair with his 22-year-old first cousin Louise de Montbazon (who was married to his close friend, and whom he deserted when she became pregnant) and then with the Princess of Talmont, who was in her 40s.
When Tsar Nicholas II of Russia, George's first cousin (their mothers were sisters), was overthrown in the Russian Revolution of 1917, the British government offered asylum to the Tsar and his family, but worsening conditions for the British people, and fears that revolution might come to the British Isles, led George to think that the presence of the Russian royals might seem inappropriate under the circumstances.