King Charles's heartbreaking plea for Prince Harry ahead of his 75th birthday

King Charles reportedly has just one wish for his 75th birthday next month - to see his beloved sons, Princes William and Harry, mend their broken relationship.

The monarch's heartfelt yearning for reconciliation comes on the heels of the ongoing tensions between his sons, partly stemming from 's bombshell revelations during his chat with Oprah Winfrey.

A palace insider shared how the King harbours a dream of familial unity, stating: "King Charles wants nothing more than peace to be restored in his family. He wants to draw a line under their past feuds and for and Prince Harry to get along - and what better timing than his birthday to bring them together."

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Despite enduring his battles, including the public revelation of his own cancer diagnosis earlier this year, King Charles remains devoted to his Royal responsibilities, reports .

The insider noted: "King Charles has been through an awful lot since becoming king, and has been gallant in carrying out his duties while facing his own health woes as he announced he had cancer earlier this year. Now he wants nothing more than to make memories with his wife, sons and grandchildren. This is what he will treasure the most - especially as his milestone birthday approaches."

Prince Harry's rocky ties with his dad King Charles and brother Prince William have been the subject of much speculation. In his tell-all book Spare, Harry laid bare his Royal life and took swipes at various relatives. He particularly singled out , alleging she fed stories about him to the press.

Yet, following some soul-searching, Charles seems more inclined towards mending fences. "Since inheriting the crown, he has spent more time exploring theologies and the teaching of their central tenets including the nature of forgiveness," an insider claimed.

Talking to the Daily Mail, the insider disclosed that Charles has gained "spiritual nourishment" from dialogues with clerics, which has led to a greater willingness to make amends with Harry, who's been residing in California with and their kids - Prince Archie and Princess Lilibet - over the last four years.

The insider said: "Faith has always been a part of Charles's life and something he's explored, but since becoming King it is playing a more central role...that reliance on faith and quiet contemplation has become a comfort and asset to him and helps him cope with the role as he adapts to being King."

An insider added: "King Charles wants nothing more than peace to be restored in his family. He wants to draw a line under their past feuds and for Prince William and Prince Harry to get along. King Charles has been through a great deal since becoming king, and has been gallant in carrying out his duties while facing his own health woes as he announced he had cancer earlier this year. Now he wants nothing more than to make memories with his sons and grandchildren. This is what he will treasure the most - especially as his milestone birthday approaches."