Share Tweet Pin Email By Katherine Tinsley 1:57pm PDT, Aug 29, 2025 _ Before Princess Diana died in 1997, the older of her two sons, Prince William, made a promise to her that touched her so deeply, it left her in tears. Tragically, the future king will never get the opportunity to fulfill his promise to the late Princess of Wales due to her untimely death at 36.Keep reading for more on the vow a young William made to his mummy...