Princess Tatiana of Greece and Denmark
Princess Tatiana of Greece and Denmark( born Tatiana Ellinka Blatnik, 28 August 1980) is the wife of Prince Nikolaos, son of Constantine II, who reigned as King of Greece until the monarchy was abolished in 1973.
Princess Irene of Greece and Denmark
Princess Irene of Greece and Denmark( born 11 May 1942) is the youngest child and second daughter of King Paul of Greece and his wife Princess Frederika of Hanover.
She is the younger sister of Queen Sofía of Spain and of the deposed King Constantine II of Greece and maternal aunt of Felipe VI of Spain.
Princess Irene, Duchess of Aosta
Princess Irene of Greece and Denmark( 13 February 1904 – 15 April 1974) was the fifth child and second daughter of Constantine I of Greece and his wife, the former Princess Sophie of Prussia.
She was a member of the royal families of Greece and Italy.
From 1941 to 1943 she was also officially Queen Consort of Croatia.
Princess Maria-Olympia of Greece and Denmark
Princess Maria- Olympia of Greece and Denmark( born 25 July 1996) is an American fashion model, socialite and member of the Greek royal family.
She is the oldest child and only daughter of Pavlos, Crown Prince of Greece and his wife, Marie- Chantal Miller.
Her paternal grandparents are Constantine II of Greece and Anne- Marie of Denmark, who were the last King and Queen of the Hellenes, while her maternal grandfather is duty free entrepreneur Robert Warren Miller.
She is currently sixth in the line of succession to the former throne of Greece, after her father and brothers.
Prince Nikolaos of Greece and Denmark
Prince Nikolaos of Greece and Denmark( born 1 October 1969) is the third child of Constantine II and Anne- Marie of Denmark, who were the last King and Queen of Greece, reigning from 1964 to 1973.
Princess Alexia of Greece and Denmark
Princess Alexia of Greece and Denmark( born 10 July 1965) is the eldest child of Constantine II and Anne- Marie of Denmark, who were king and queen of Greece from 1964 until the abolition of the monarchy in 1973.
Princess Theodora of Greece and Denmark
Princess Theodora of Greece and Denmark( born 9 June 1983 in St Mary's Hospital, London), also known under her stage name Theodora Greece, is a British actress and member of the Greek royal family and Danish Royal Family.
She is currently ninth in the line of succession to the defunct Greek throne.
Prince Achileas-Andreas of Greece and Denmark
Prince Achileas- Andreas of Greece and Denmark( born 12 August 2000) is a member of the Greek royal family.
He is the second son and third child of Crown Prince Pavlos of Greece and Marie- Chantal Miller.
His paternal grandparents are Constantine II of Greece and Anne- Marie of Denmark, who were the last King and Queen of the Hellenes.
He is currently third in the line of succession to the former Greek throne.
Princess Alice of Battenberg
Princess Alice of Battenberg
(Victoria Alice Elizabeth Julia Marie; 25 February 1885 – 5 December 1969) was the mother of Prince Philip and mother-in-law of Queen Elizabeth II.
A great-granddaughter of Queen Victoria
, she was born in Windsor Castle and grew up in the United Kingdom, the German Empire, and the Mediterranean.
A Hessian princess by birth, she was a member of the Battenberg family, a morganatic branch of the House of Hesse-Darmstadt.
She was congenitally deaf.
After marrying Prince Andrew of Greece and Denmark in 1903, she adopted the style of her husband, becoming Princess Andrew of Greece and Denmark.
She lived in Greece until the exile of most of the Greek royal family in 1917.
On returning to Greece a few years later, her husband was blamed in part for the country's defeat in the Greco-Turkish War (1919–1922), and the family was once again forced into exile until the restoration of the Greek monarchy in 1935.
In 1930, she was diagnosed with schizophrenia and was committed to a sanatorium in Switzerland; thereafter, she lived separately from her husband.
After her recovery, she devoted most of her remaining years to charity work in Greece.
She stayed in Athens during the Second World War, sheltering Jewish refugees, for which she is recognised as "Righteous Among the Nations" by Israel's Holocaust memorial institution, Yad Vashem.
After the war, she stayed in Greece and founded a Greek Orthodox nursing order of nuns known as the Christian Sisterhood of Martha and Mary.
After the fall of King Constantine II of Greece and the imposition of military rule in Greece in 1967, she was invited by her son and daughter-in-law to live at Buckingham Palace in London, where she died two years later.
Her remains were transferred from a vault in her birthplace, Windsor Castle, to a Russian Orthodox convent, the Church of Mary Magdalene, on the Mount of Olives in Jerusalem in 1988.
Princess Theodora of Greece and Denmark (1906–1969)
Princess Theodora of Greece and Denmark (30 May 1906 – 16 October 1969) was the second child and daughter of Prince Andrew of Greece and Denmark and Princess Alice of Battenberg, and the second eldest sister of Prince Philip, Duke of Edinburgh.

Question: Where was the mother of Princess Theodora Of Greece And Denmark (1906–1969) born?
Answer: Windsor Castle