Kate Middleton became the Princess of Wales when Queen Elizabeth passed, but the title was previously held by Princess Diana. With the U.K. losing the Princess of Wales in 1997, Kate almost rejected the ranking. “In marrying the elder son of [King] Charles, Catherine was aware she’d one day have to tread in her late mother-in-law’s footsteps — but the prospect of becoming the Princess of Wales held little appeal,” Robert Jobson wrote in Catherine, the Princess of Wales. “She knew she’d inevitably be compared with Diana, whose untimely death had provoked such a tsunami of anger and grief. And s…