Prince Aleksander Ludwik Radziwiłł (Lithuanian: Aleksandras Liudvikas Radvila; 4 August 1594[1] – 30 March 1654[2]) was a Polish–Lithuanian nobleman.

He married Tekla Anna Wołłowicz in 1626,[8] Katarzyna Eugenia Tyszkiewicz in 1639 and Lucricia Marie Strozzi in October, 1642 in Warsaw.

Eventually, Katarzyna defected to Jeremi's side and divorced Aleksander, who was forced to give up his claims.

However, towards the end of his life he distanced himself from Władysław, by opposing his plans of war with Ottomans.

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