Mary FitzAlan Duchess of Norfolk  25
- Born: 1540
- Marriage: Thomas Howard 4th Duke of Norfolk  about 30 Mar 1555
- Died: 25 Aug 1557, Arundel House, Strand Street, London, Middlesex, England at age 17
- Buried: 20 Oct 1557, FitzAlan Chapel, Arundel, Sussex, England
Mary was the first wife of Thomas Howard, 4th Duke of Norfolk , whom she married in 1556. They had one son, Philip Howard, 20th Earl of Arundel , born the following year. Mary died eight weeks after the birth of Philip, and she was buried in Fitzalan Chapel in Arundel . Upon the death of her father in 1580, the earldom of Arundel passed to his grandson Philip.
Mary married Thomas Howard 4th Duke of Norfolk  [MRIN: 8427], son of Henry Howard Earl of Surrey  and Frances de Vere , about 30 Mar 1555. (Thomas Howard 4th Duke of Norfolk  was born on 10 Mar 1537, died on 2 Jun 1572 in Tower Hill, London, Middlesex, England and was buried in Tower Chapel, London, Middlesex, England.). The cause of his death was Executed.