Roelof Kranenburg was a Dutch politician, lawyer and professor of state law.
Initially, he was a member of the Vrijzinnig Democratische Bond, but later he joined the PvdA. He was president of the Senate from 1946 till 1951 He was preceded by Willem Lodewijk de Vos van Steenwijk

Willem Lodewijk de Vos van Steenwijk

Willem Lodewijk, Baron de Vos van Steenwijk was a conservative Dutch politician.He was a member of the Christelijk Historische Unie and president of Senate from 1929 to 1946...

 and was succeeded by his party colleague Jan Anne Jonkman

Jan Anne Jonkman

Jan Anne Jonkman was a Dutch politician.He was a member of the PvdA. As a minister, he dealt with colonial affairs. He was also president of the Senate from 1951-1966. He was preceded by Roelof Kranenburg and was succeeded by his party colleague Jannes Pieter Mazure.-References:...

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During the Second World War, he was put under arrest by the Nazis.