- Written by Sean Coughlan
- Royal correspondent
Prince William unexpectedly pulled out of attending a memorial service for the late former Greek King Constantine, where he was scheduled to give a reading.
Kensington Palace said it was due to a “personal matter”.
Queen Camilla led the royal family in the service at St George's Chapel at Windsor Castle.
The king, who is being treated for cancer, was also unable to attend the mass.
There are no further details about the “personal order” that prevented the Prince of Wales from being there on Tuesday morning, but royal sources indicated that there was no reason for concern.
Kensington Palace says Prince William's wife, Catherine, who is recovering from abdominal surgery last month, is continuing to do well.
The Prince of Wales had contacted the Greek royal family to tell them that he would not be able to join them.
With a succession of royal medical stories this year, including Catherine's surgery, the king's prostate procedure and then cancer diagnosis, there has been significant public interest in their health.
But the moody music coming from the palace was reassuring and didn't explain much about Prince William's sudden withdrawal.
The service recalled former King Constantine, William's godfather, who died last year. His eldest son, Crown Prince Pavlos, gave the reading instead of Prince William.
The Queen was taken from Windsor Castle to the 15th-century church and was received by the Dean of Windsor, the Reverend Christopher Coxworth, in the Galilee balcony.
Princess Anne and Prince Andrew were among the royal family at the memorial service, along with members of royal families abroad who traveled to Windsor to attend.
King Charles was close to his second cousin Constantine, who was a first cousin and sailing partner of the late Duke of Edinburgh.
Constantine died at the age of 82 in January last year, decades after he was ousted from the throne in a military coup.
The Princess Royal and Queen were among the family members who attended the service
The Duke of York and his former wife Sarah, Duchess of York, were among the royal family members who attended the ceremony
There was a strong royal turnout for King Constantine's memorial service
Queen Camilla arrives for duty
Crown Prince Pavlos and his wife Marie-Chantal arrive at St. George's Church
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