The British royal family is mourning a loved one.

Thomas Kingston, the husband of Lady Gabriella Windsor and ex-boyfriend of Pippa Middleton, died Feb. 25, representatives for his family confirmed. He was 45.

"It is with the deepest sorrow that we announce the death of Thomas Kingston, our beloved husband, son and brother," the statement, per Press Association, read. "Tom was an exceptional man who lit up the lives of all who knew him. His death has come as a great shock to the whole family, and we ask you to respect our privacy as we mourn his passing."

Thomas—who wed the daughter of Queen Elizabeth II's cousin Prince Michael of Kent and his wife Princess Michael of Kent in 2019—is also survived by his parents Martin and Jill Kingston as well as sisters Joanna Connolly and Emma Murray.

Following the news of Thomas' death, Buckingham Palace released a statement from King Charles III and Queen Camilla sharing their grief.  

"The King and The Queen have been informed of Thomas's death and join Prince and Princess Michael of Kent and all those who knew him in grieving a much-loved member of the family," the statement expressed. "In particular, Their Majesties send their most heartfelt thoughts and prayers to Gabriella and to all the Kingston family." 

Thomas died in Gloucestershire, according to the statement from his family, and although the cause of death was not disclosed, no suspicious circumstances or other parties were involved.

The finance executive became engaged to Gabriella—who is currently 56th in line to the throne—in September 2018, tying the knot the following May.

Throughout their four years of marriage, the couple often joined the royal family at events, most recently at a Celebration of Shakespeare event on Feb. 14 in London with Queen Camilla.

Prior to his relationship with Gabriella, Thomas was linked to Kate Middleton's younger sister Pippa, around 2011. However, the pair appeared to remain friendly following their breakup as Thomas and Gabriella attended Pippa's 2017 wedding to James Matthews. Pippa and James later returned the favor when Thomas and Gabriella tied the knot in 2019. 

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The husband of Lady Gabriella Windsor and ex-boyfriend of Pippa Middleton, died Feb. 25. Although the cause of death was not disclosed, no suspicious circumstances or other parties were involved, according to the family.

While King Charles III was in the hospital for his benign prostate enlargement procedure, the royal family member was diagnosed with cancer.

"His Majesty has today commenced a schedule of regular treatments, during which time he has been advised by doctors to postpone public-facing duties," Buckingham Palace said Feb. 5. "Throughout this period, His Majesty will continue to undertake State business and official paperwork as usual.The King is grateful to his medical team for their swift intervention, which was made possible thanks to his recent hospital procedure. He remains wholly positive about his treatment and looks forward to returning to full public duty as soon as possible."

The Duchess of York's rep said in a statement on Jan. 21 that Sarah was recently diagnosed with malignant melanoma, an aggressive form of skin cancer. Several months prior, she underwent a single mastectomy to treat breast cancer.

On Jan. 14, Queen Margrethe II of Denmark made history as she officially abdicated the throne, handing the crown over to her son, now known as King Frederik the 10th. 

Kensington Palace announced on Jan. 17 that Kate Middleton underwent planned abdominal surgery and was set to remain in the hospital for 10 to 14 days.

"Based on the current medical advice," the Palace said, "she is unlikely to return to public duties until after Easter."

Amid Kate's recovery, Prince William postponed a number of engagements as he supported his family, including the couple's three children, Prince George, Princess Charlotte and Prince Louis.

Shortly after Kate's hospitalization was made public, Buckingham Palace shared that Charles "has sought treatment for an enlarged prostate."

"His Majesty's condition is benign and he will attend hospital next week for a corrective procedure," the statement added. "The King’s public engagements will be postponed for a short period of recuperation."

Princess Claire and Prince Felix of Luxembourg welcomed son Balthazar Felix Karl on Jan. 7, the first royal baby of the New Year!