Mallet also took to social media, sharing a gallery of photos to Instagram. "So this was the best day of my life. 22nd of July 2020, I asked the love of my life to spend the rest of her life with me and she said YES. Couldn't be happier and I love you with all my heart @ameliaspencer15," he wrote.
He shared four photos of himself and Amelia, all of which showed off the stunning engagement ring.
Amelia is the daughter of Earl Spencer and Victoria Lockwood, and has three full siblings: older sister Lady Kitty Spencer, twin sister Lady Eliza Spencer, and younger brother Viscount Althorp. Spencer and Lockwood moved their family to Cape Town in 1995 following the death of Princess Diana but moved back to the UK following their 1997 divorce. He's remarried twice and had three more children.
It's also not the only wedding the Spencer family has to look forward to. Kitty got engaged to Michael Lewis earlier this year.