The funeral for Constantine II, the former king of Greece, took place in Athens on Monday, with royals from all of the European households in attendance to pay their respects.
The Princess Royal represented the British royal family at the service at the Metropolitan Cathedral, while Prince Michael of Kent's daughter, Lady Gabriella Kingston, attended on behalf of the Prince of Wales.
WATCH: Queen Letizia and Marie-Chantal leave family dinner night before King Constantine's funeral
Many royal watchers on social media wondered why King Charles and Prince William did not travel to Athens given their close family ties to the former Greek royal family – Constantine was Charles' second cousin and William's godfather.
While Buckingham Palace and Kensington Palace have not shared the reasons behind their absence, it's common for royals to send representatives in their place to events such as large-scale weddings and funerals.
MORE: King Constantine: Heartbroken wife Anne-Marie's last words to husband revealed
© Photo: Getty ImagesThe Princess Royal paid her respects to the late Constantine II
It's also likely that their schedules clashed with the date of the funeral and the subsequent travel to and from Greece.
On Monday, Charles and Camilla held a meeting with President of the Republic of Cyprus, Nicos Anastasiades, a photo of which was shared on his Twitter account.
Both the King and the Waleses resumed their royal duties last week after their Christmas break
King Charles and Queen Consort Camilla are currently residing at their Scottish residence, Birkhall, with the monarch visiting the Aboyne and Mid Deeside Community Shed in Aberdeenshire last Thursday.
© Photo: Getty ImagesConstantine II with Charles and Camilla in 2007
Meanwhile, Prince William and Kate carried out engagements in Merseyside last week, including opening the new Royal Liverpool University Hospital, while the Princess held an early years meeting on Friday.
Many heads of state were in attendance at Constantine's funeral, including King Felipe and Queen Letizia of Spain, King Willem-Alexander and Queen Maxima of The Netherlands, King Carl XVI Gustaf and Queen Silvia of Sweden and Queen Margrethe of Denmark.
Find out more about Harry's new life in Montecito, as we spoke to one of his neighbours in our brand new podcast.
Make sure you never miss a ROYAL story! Sign up to The Royal Explainer newsletter to receive your weekly dose of royal features and other exclusive content straight to your inbox.
