Berthold, Margrave of Baden

Berthold Prinz und Markgraf von Baden (24 February 1906 – 27 October 1963), styled Margrave of Baden and Duke of Zähringen, was the head of the House of Baden, which had reigned over the Grand Duchy of Baden until 1918, from 1929 until his death.

He was the brother-in-law of Philip, Duke of Edinburgh, through his marriage to Philip's sister, Princess Theodora of Greece and Denmark.

The only son and younger child of Prince Maximilian, Margrave of Baden and Princess Marie Louise of Hanover and Cumberland, Berthold married his second cousin Princess Theodora of Greece and Denmark, daughter of Prince Andrew of Greece and Denmark and Princess Alice of Battenberg, on 17 August 1931 in Baden-Baden.

He was conscripted as a soldier into the army of the Wehrmacht, but served only briefly and was exempted from military service in 1940 after being injured in France.

Via his marriage, he was the brother-in-law of Prince Philip of Greece and Denmark, later Philip, Duke of Edinburgh from November 1947.

His bride was also his second cousin, through Christian IX of Denmark.

The couple had the following children:

Berthold died on 27 October 1963, aged 57, in Spaichingen.

He was in a car driving with his son when he suddenly died from an acute health issue, probably a heart attack.

He was succeeded as titular margrave and head of house by his son Max.