Tags: Noble.
Anna of Masovia (c. 1498 – after 26 January 1557 in Jaroslaw) was Princess of Mazovia and a member of the House of Piast. She was the last representative of the line of Masovian-Piast.She was the second daughter of Konrad III of Masovia and Anna Radziwiłł. She was sister of Dukes Janusz III of Masovia and Stanislaus of Masovia. Her sister was Sophia who married Stephen VII Báthory.