Robert Acheson, former headmaster of St Andrews' Prep School in Pangbourne, Berks, where Miss Middleton studied, said: "Prince Charles gave a heartfelt speech and offered some high praise for his daughter-in-law.
"He said he was very lucky to have her as a daughter-in-law.
The lighter side of the Prince's speech came when he cracked jokes about his eldest son and his famously thinning hairline.
Susie Lea, a friend of the Middleton family, described a moment when "the Prince of Wales made a few jokes about his bald patch and his son's bald patch, saying it must be hereditary".
"William smiled, he was amused. Kate looked amused as well," she added. (ANI)