That’s right, @Yumyumdindins. I mean, it’s not any kind of direct copy — the engagement had been broken off a few years before Daphne married ‘Boy’ Browning, so there’s no suggestion of any overlap, Jan married another man before Rebecca was published, and the novel had been out six years before J killed herself aged 39 and leaving a young daughter. She was dark, glamorous and sociable, and in a cache of love letters Daphne found, she wrote her surname with a towering R, like Rebecca, and D became obsessively jealous, like the second Mrs de Winter. These days she’d pore obsessively over her on social media.
And while Rebecca’s origins are mysterious — Max’s grandmother describes her as having ‘breeding, brains and beauty’, but all we know about her family is her caddish, lowlife cousin Jack Favell, who doesn’t suggest top drawer stuff — Jan was straightforwardly an upper-class Catholic debutante (though her family had Sephardic Jewish origins.)
Her real name was Jeanette, but I’m not sure that would fit Max’s sense of ‘beautiful and unusual’.
There are apparently no photos of Jan, but this is her daughter at her own debutante ball.