Royals Who Is Royal Bride-to-Be Gabriella Windsor? (Her Fiancé Dated Pippa Middleton!) There's another royal wedding in the works — and there will likely be a famous ex-girlfriend in attendance By Stephanie Petit Stephanie Petit Stephanie Petit is a Royals Writer/Reporter at PEOPLE. She has been with the brand since 2016 after graduating from The College of New Jersey and holding previous positions at Seventeen, CBS Radio and more. Follow the proud dog mom on Twitter at @stephpetit_ for the latest on Queen Elizabeth's corgis. People Editorial Guidelines Published on September 19, 2018 10:56 AM Share Tweet Pin Email Mark your calendars! There’s another royal wedding in the works — and there will likely be a famous ex-girlfriend in attendance. Buckingham Palace announced on Wednesday that Lady Gabriella Windsor is engaged to Thomas Kingston. The groom-to-be proposed last month on Sark, one of the Channel Islands just off the coast of France, and the couple’s big day will take place in spring 2019. Lady Gabriella, known as “Ella” to her friends and family, is not as well known as some other members of the royal family. She is the daughter of one of Queen Elizabeth‘s cousins, Prince Michael of Kent, meaning both Gabriella and Prince Charles have King George V and Queen Mary as their great-grandparents. The 37-year-old is currently 51st in the line of succession to the British throne, behind her father, older brother Lord Frederick Windsor and her two young nieces, Maud and Isabella Windsor. Max Mumby/Indigo/Getty Royal fans likely recognize Lady Gabriella from her outings with the royal family. Since she was a youngster, she has been a regular on the balcony of Buckingham Palace at Trooping the Colour, the annual parade celebrating the monarch’s birthday. Blitz Pictures/REX/Shutterstock Who Is the Next Heir to the Throne? See the Complete British Line of Succession Gabriella now works as a Senior Director at Branding Latin America, a brand-positioning platform that specializes in the region. She also contributes to the London Magazine as a writer. Tim Graham/Getty Kingston, who works in frontier market investment and is a Director of Devonport Capital, had a connection to the royal family before starting his three-year romance with Lady Gabriella: He previously dated Kate Middleton‘s younger sister, Pippa Middleton! Alan Davidson/REX/Shutterstock REX/Shutterstock Can’t get enough of PEOPLE’s Royals coverage? Sign up for our newsletter to get the latest updates on Kate Middleton, Meghan Markle and more! Despite ending their relationship around 2011, Pippa (who is currently expecting her first child with husband James Matthews) and Kingston remained friends throughout the years. In fact, Kingston and Lady Gabriella attended Pippa’s May 2017 wedding — a strong hint that Pippa could be among the famous faces supporting the couple when they tie the knot next year!