Prince George’s godfather and one of Britain’s richest has become engaged. 32-year-old Hugh Grosvenor, Duke of Westminster, proposed to his girlfriend Olivia Henson at the family estate, Eaton Hall, the Times reported.

“Members of both families are absolutely thrilled with the news,” the newspaper quoted a statement as saying. The family has close ties to the royals, with Grosvenor himself being a godson of George’s grandfather, King Charles III.

The family has an estimated net worth of just under £10 billion, which Grosvenor inherited after his father’s death in 2016. The Duke of Westminster does have two older sisters. But they went away empty-handed because primogeniture still applies in the family – the entire inheritance goes to the eldest son. Unless the law of inheritance is changed, if Grosvenor and the future Duchess of Westminster do not have a son, a distant male relative would eventually inherit the estate.

The Grosvenor Group owns, among other things, around 300 hectares of land in the exclusive London boroughs of Mayfair and Belgravia, which the ancestor Thomas Grosvenor received in 1677 as part of a dowry.