RELATED: See Audrey Hepburn’s Granddaughter, Who’s Carrying on Her Legacy. Arthur, who is 22 years old, is the oldest son of Mary McCartney, Paul’s second-born, and her ex-husband, Alistair Donald. According to his LinkedIn profile, Arthur graduated from Yale University this year, with a major in history. While he dabbled in the entertainment industry as a summer intern in 2018 for Lucasfilms, Arthur seems to be pursuing a career in finance. This July, he started working as an investment banking analyst at Goldman Sachs. RELATED: See Jackie Kennedy’s Lookalike Granddaughter Now. Arthur has kept his personal life fairly private, and he doesn’t have any public social media accounts. He hasn’t spoken out about why he doesn’t use social media, but it may have something to do with his mother’s advice. In a 2020 interview, Mary (pictured with him above) opened up about what she’s told Arthur and his three brothers about sharing details about their lives online, especially as members of a famous family. “I have to be very careful with them about social media because I don’t think any kids should Instagram the location they’re in or pictures of their school uniform,” she told journalist Alain Elkann. Mary shares her second child Elliot Donald, 19, with Alistair, and has two younger sons, 13-year-old Sam Aboud and nine-year-old Sid Aboud, with her current husband, director Simon Aboud. “There should be privacy,” she continued, “and certain people [on social media] aren’t necessarily having as great a time as they’re making out.” And for more entertainment and celebrity news sent right to your inbox, sign up for our daily newsletter.  While he’s not a musician himself, Arthur does have something obvious in common with his grandfather: he looks exactly like him. Whenever he’s photographed in public, media outlets have commented on how closely Arthur resembles his grandfather, especially during his days with The Beatles. Both of them have rounded faces and share the same smile and eyes.ae0fcc31ae342fd3a1346ebb1f342fcb Paul and Arthur have the same taste in fashion, as well. Arthur is often seen in t-shirts and a jean jacket, a fairly similar clothing style to his grandfather. In 2018, Ava Phillippe was in London with her mother Reese Witherspoon for the premiere of A Wrinkle in Time. While she was there, Phillippe was spotted walking the streets of Mayfair with Arthur. As reported by Vanity Fair, the pair were on their way to Sketch, an art gallery. Some speculated that Ava and Arthur were out on a date, but it remains unclear whether they were seeing each other or are just friends. They haven’t been seen together in public since, however. Arthur and Paul seem to be quite close. In March 2018, Paul attended a London screening of the ’60s documentary My Generation, in which he appears, and brought Arthur and Mary with him. During July of that year, Arthur and Paul were spotted getting lunch together at St. John’s, a restaurant in London. Along with Mary’s four kids, Paul has four other grandchildren: Miller Alasdhair James Willis (16), Bailey Linda Olwyn Willis (14), Beckett Robert Lee Willis (13), and Reiley Dilys Stella Willis (10). They are all the children of fashion designer Stella McCartney, Paul’s third child. RELATED: See Gregory Peck’s Lookalike Grandson, Who’s Taking Over TV.