Meghan Markle and Prince Harry's wedding venue is hosting the third royal marriage this year.

Lady Gabriella Windsor, 37, is set to wed Tom Kingstone at St. George's Chapel - followed by a reception in the same venue as the Duke and Duchess of Sussex, Frogmore House.

Pregnant Meghan walked down the aisle to wed Harry on May 19, followed by October's marriage of Princess Eugenie to Jack Brooksbank.

Now, St George's Chapel will host its third royal wedding in a year when Lady Gabriella Windsor, daughter of the Queen's first cousin, Prince Michael of Kent, weds fiancé Tom Kingstone.

Unlike Meghan's wedding to Harry, attended by 2,640 members of the public and 600 people inside the chapel, Lady Gabriella Windsor's big day is expected to be far more low-key.

Lady Gabriella Windsor and Thomas Kingston will marry in the spring of 2019 (
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REX/Shutterstock)
St George's Chapel inside Windsor castle will host a third royal wedding in the space of 12 months (
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www.alamy.com)

But despite the significantly smaller invite list, some senior members of the Royal Family are expected to attend the ceremony in spring next year.

The royal is said to have chosen the venue because she has fond memories of childhood Christmases at Windsor, before royal festivities were moved to Sandringham.

A friend said: "Lady Gabriella has a real personal connection with St George's, it is a place she loves."

Frogmore House in the grounds of Home Park (
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Getty)
Duke of Sussex and The Duchess of Sussex leave Windsor Castle after their fairytale wedding (
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Getty Images)

The wedding will be paid for privately by  Prince Michael of Kent and his wife, Princess Michael, reports the Mail .

Buckingham Palace has not confirmed a date of the wedding, although it's believed to be in the spring.

Interestingly, groom Tom Kingstone is said to have once dated an ex of Prince William, Natalie Hicks-Loebbecke.

He works in  'frontier market investment' and is a director of equity company Devonport Capital while Lady Gabriella Windsor  works at global branding company.

Princess Eugenie and Jack Brooksbank kiss as they leave after their wedding at St George's Chapel (
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PA)
Princess Eugenie and Jack Brooksbank leave St George's Chapel after their wedding (
Image:
Getty Images)

The couple have been dating for around three years and got engaged in August this year after Tom proposed on the island of Sark.

A statement released by Buckingham Palace earlier this year said: "Prince and Princess Michael of Kent are delighted to announce the engagement of their daughter Lady Gabriella Windsor to Mr Thomas Kingston.

"The engagement took place in August; Mr Kingston proposed on the Isle of Sark.

"It is anticipated that the wedding will take place in the spring of 2019."