Lady Mary FitzAlan, Duchess of Norfolk (1541 – 23/25 August 1557) was the youngest daughter and child of Henry FitzAlan, 19th Earl of Arundel

Henry FitzAlan, 19th Earl of Arundel

Henry FitzAlan, 19th Earl of Arundel was an English nobleman, who over his long life assumed a prominent place at the court of all the later Tudor sovereigns, probably the only person to do so.-Court career:...

 and his first wife Lady Catherine Grey. Because her only brother had predeceased her, she and her elder sister, Jane FitzAlan

Jane Lumley

Jane , Lady Lumley was the first person to translate Euripides into English. She was the eldest child of Henry Fitzalan, 19th Earl of Arundel , patron of the arts, and his first wife, Katherine Grey Fitzalan...

 were co-heiresses to the earldom

Earl of Arundel

The title Earl of Arundel is the oldest extant Earldom and perhaps the oldest extant title in the Peerage of England. It is currently held by the Duke of Norfolk, and is used by his heir apparent as a courtesy title. It was created in 1138 for the Norman baron Sir William d'Aubigny...

 of her father. Mary and Jane both received an excellent education.

Mary was the first wife of Thomas Howard, 4th Duke of Norfolk

Thomas Howard, 4th Duke of Norfolk

Thomas Howard, 4th Duke of Norfolk, KG, Earl Marshal was an English nobleman.Norfolk was the son of the poet Henry Howard, Earl of Surrey. He was taught as a child by John Foxe, the Protestant martyrologist, who remained a lifelong recipient of Norfolk's patronage...

, whom she married in 1556. They had one son, Philip Howard, 20th Earl of Arundel

Philip Howard, 20th Earl of Arundel

Saint Philip Howard, 20th Earl of Arundel was an English nobleman. He was canonised by Pope Paul VI in 1970, as one of the Forty Martyrs of England and Wales...

, born the following year. Mary died eight weeks after the birth of Philip, and she was buried in Fitzalan Chapel

Fitzalan Chapel

The Fitzalan Chapel is located within the eastern end of the church building constructed on the western grounds of Arundel Castle. This church building is one of the very few church buildings that is currently divided into two worship spaces, one Catholic and one Anglican, with the western side of...

 in Arundel

Arundel

Arundel is a market town and civil parish in the South Downs of West Sussex in the south of England. It lies south southwest of London, west of Brighton, and east of the county town of Chichester. Other nearby towns include Worthing east southeast, Littlehampton to the south and Bognor Regis to...

. Upon the death of her father in 1580, the earldom of Arundel passed to his grandson Philip.