The British royal family is dominating headlines these days, thanks to The Crown (and, of course, a certain upcoming wedding). The Netflix drama gets us better acquainted with both Queen Elizabeth and her sister, Princess Margaret. Margaret’s children, however, aren’t as well-known… though one of them is reportedly Elizabeth’s favorite young royal. Margaret, who passed away in 2002, was married to photographer Antony Armstrong-Jones from 1960 to 1978, and they welcomed two children in that timeframe — Lady Sarah Chatto and David Armstrong-Jones.

Like her father, Lady Sarah, 53, is an artist. She’s an award-winning painter and the vice president of the Royal Ballet. When she visited a film set in India with her father in the 1980s, she met her husband, actor Daniel Chatto, who was working on a different film at the time. They married in 1994 and have welcomed two sons in the years since — Samuel, 21, and Arthur, 18. Arthur served as a Page of Honor to Elizabeth, so the Queen must be as fond of him as she is of Lady Sarah.

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Margaret with her husband and two children. (Photo Credit: Getty Images)

“The Queen adores Sarah and seeks out her company as often as possible,” an insider told the Daily Mail last year. “She is her absolute favorite younger royal… They are hugely at ease in each other’s company. Much giggling can be heard when they are together. They share a sense of loyalty, fun, duty, and the ridiculous.” They’re so close, in fact, that the Mail has reported that Lady Sarah is the only guest Elizabeth invites to her favorite hideaway, Craigowan Lodge near Balmoral Castle.

There’s less press about David, Lady Sarah’s brother, but he too has made an impressive life for himself. He started his own furniture design business, originally called David Linley Furniture Limited and now simply called Linley, before becoming the chairman of famed British auction house Christie’s.

The now-56-year-old married Serena Stanhope in 1993, and they also have two kids — 18-year-old son Charles and 15-year-old daughter Lady Margarita. Like his cousin Arthur, Charles served as a Page of Honor to the Queen, while Margarita served as a bridesmaid to Kate Middleton. It’s nice to know the royals keep it all in the family, right?