Adolf Hitler’s goddaughter, Edda Goering, has died at the age of 80 and been buried in an unmarked grave, it has been reported.

Ms Goering was also the daughter of Hitler’s deputy Hermann Goering, who played a key role in the Nazi regime, establishing the feared Gestapo secret police force.

She died in December, although her death was not made public at the time, and has been buried in the Waldfriedhof Cemetery in Munich. The exact location of her grave has not been disclosed.

She was born in 1938, the year before the Second World War started.

After the Nazis were defeated in 1945, her father was sentenced to death for war crimes. He took his own life the night he was to be hanged.

Hitler's holiday home now a restaurant Show all 5 1 /5 Hitler's holiday home now a restaurant Hitler's holiday home now a restaurant The Eagle's Nest, Hitler's holiday home in the Bavarian alps, is today a restaurant owned by a charitable trust Wolfgang Manousek Hitler's holiday home now a restaurant Sitting atop Kehlstein mountain, it was known in German as Kehlstenhaus Getty Hitler's holiday home now a restaurant The house was constructed in 1938, paid for by the Nazi party Getty Hitler's holiday home now a restaurant Photo taken in May 1945 shows a view of the eagle's nest, the octagonal main hall or reception room, in Obersalzberg of the Bavarian Alps AFP/Getty Hitler's holiday home now a restaurant Photo taken in May 1945 shows the entrance of the Eagle's Nest AFP/Getty

Ms Goering had been battling with the authorities over a share of father’s estate, which was confiscated after the war.

He had amassed a huge collection of art stolen from museums and private collections.

In 2015 she asked for enough of the items back to live a “subsistence livelihood”, according to Fox News.

Her pleas were rejected by German authorities.

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Ms Goering rarely spoke of her parents publicly, but in 1989 she did say she had a "very nice early childhood" because of the "love and care of my parents," according to the Times of Israel.

She added that she believed her father was doing what he thought was “best for Germany” at the time.