Share Tweet Pin Email By Marisa Laudadio 6:50pm PST, Mar 2, 2026 _ For more than two decades, Prince William has leaned on a steady presence outside palace walls - his mother-in-law - who's made all the difference in his life.Keep reading to learn more...MORE: Follow Wonderwall on MSN for more top news _ Carole Middleton has been a rock for Prince William and Kate Middleton for more than 20 years, offering both practical help and emotional support behind the scenes.