The Crown: What really happened to Philip’s mother Princess Alice?

The Greek royal family were once again forced into exile following the country’s defeat in the Greco-Turkish War, 1919-1922, until the restoration of the Greek monarchy in 1935.

In 1930, Princess Alice was diagnosed with paranoid schizophrenia by Thomas Ross, a psychiatrist who specialised in shell-shock and subsequently by Sir Maurice Craig, who treated King George VI (Jared Harris) before he had speech therapy.

The diagnosis was confirmed by Dr Ernst Simmel in Tegel, Berlin and she was and was committed to treatment at Dr Ludwig Binswanger’s sanatorium in Kreuzlingen, Switzerland.

At the asylum, Princess Alice was treated by Sigmund Freud, who believed that her delusions were the result of sexual frustration.

source: express.co.uk