Prince Edward and Sophie, Countess of Wessex
Sophie, Countess of Wessex and Prince Edward, Earl of Wessex visit the Tomorrow's People Social Enterprises at St Anselm's Church, Kennington on the Countess's 50th birthday on January 20, 2015 in London. Getty Images/Max Mumby

Prince Edward beats his older siblings Prince Charles, Prince Andrew and Princess Anne in this aspect thanks to his wife Sophie, Countess of Wessex.

Among Queen Elizabeth II and Prince Philip’s children, not much was expected from the Earl of Wessex. According to body language expert Judi James, Prince Edward was the one least expected to make a strong and long-term marriage.

Prince Edward isn’t as bold as the Prince of Wales, Duke of York and Princess Royal. He quit the Royal Marine training, made bad decisions and was criticized for organizing the ill-fated “It’s a Royal Knock-Out.”

Among the worst decisions Prince Edward made was violating the privacy guideline agreement between the royal family and the media when Prince William was in college. Prince Edward’s TV production company secretly filmed the Duke of Sussex which reportedly “mortified” Prince Charles and Queen Elizabeth II.

He was even considered the “black sheep of the family.” However, he beats all of his older siblings when it comes to his marital bliss as he is the only child of Her Majesty who did not divorce his first spouse.

“But then as Charles, Anne and Andrew created an unexpectedly low bar in terms of marriage survival rates, now suddenly it’s Edward looking like the son with the relationship staying power after all,” James said.

As for his successful marriage with Sophie, Countess of Wessex, James believed that it was due to the latter.

“Judging from her history and her body language I would suggest this is largely down to Sophie,” James said, giving the credit to Sophie.

“A successful PR with her own firm she integrated into the Royal Family in a very unfussy way and was a perfect complement for her husband’s trait of apparently taking himself a little too seriously.”

According to Ingrid Seward in her book “Prince Edward: A Biography,” the Earl of Wessex was determined to make his first marriage work after witnessing how Prince Charles’, Prince Andrew’s and Princess Anne’s first marriages ended in divorce. He even asked the media not to intrude with his relationship with Sophie.

Prince Edward was aware of how his siblings have been subjected to similar attention and it was not beneficial to their relationships at all. One time the Queen summoned the prince for blaming Sarah Ferguson when his romance with Sophie leaked to the press. He immediately apologized and it was later learned that the one who leaked the news was an employee of the royal family.