The Royal Danish House confirmed the sad news that His Royal Highness Prince Henrik of Denmark has died at the age of 83.
With the royal family at summer residence Gråsten Palace in 2016.
Both loved and criticised by the Danes for his aristocratic manner, best exemplified by his colourful clothes and thick French accent, in recent years Henrik found support particularly amongst the Danish youth for breaking with the Danish norms of cultural uniformity.
The unconventional French-born Danish royal was hospitalized after a trip to Egypt and diagnosed with a benign tumor only two weeks ago.
The palace said he had dementia following his announcement.
In line with his wishes, he will be cremated.
Sending love to the Danish Royal Family during this hard time.
"His commitment was infectious, and his insight great".
With a jovial face framed by understated glasses, the prince had a reputation as a bon vivant who enjoyed cooking, art and wine.
That frustration sprang up again previous year, when Henrik announced he didn't want to be buried next to his wife in the cathedral where the remains of Danish royals are traditionally laid to rest.
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The prince, who retired from public life past year, was born Henri Marie Jean André de Laborde de Monpezat in a suburb of Bordeaux, France, in 1934.
Royal couples are traditionally buried together in Roskilde Cathedral, west of Copenhagen.
Born Henri Marie Jean Andre de Laborde de Monpezat in France in 1934, he married Margrethe in 1967.
Being greeted by his family (L-R) Queen Margrethe, Crown Prince Frederik and Crown Princess Mary.
Prince Henrik was surrounded by his wife and two sons when he passed away at Fredensborg Palace.
While the funeral details are yet to be released, Henrik will not be buried with his wife.
He said at the time: "I hope that men will be as equal as girls".
It wasn't until 1997 that he stood in for his wife at a public engagement for the first time. Would you like to end your life at home as Prince Henrik did if you can?
Henrik and Margrethe have two sons, Crown Prince Frederik and Prince Joachim, and eight grandchildren. He had felt "pushed aside, degraded and humiliated", and his self-respect was being destroyed.
Some politicians dubbed Henrik's behaviour "tiresome", while media had a field day, one television show conferring on him the title of "Whiner of the Year".