Alathea Howard was the wife of Thomas Howard, Earl of Arundel, who died in Padua in 1646. Her husband's possessions passed to Alathea through his will of 3 September 1640. She died in Amsterdam in 1654, and was survived by her son, William Viscount Stafford [d. 1680] (See authority of Thomas Howard for information on Howard family.)
Howard, Charles. Historical Anecdotes of Some of the Howard Family. London, 1817.
The Burlington Magazine (August - Sept. 1911).
Hervey, Mary F. S. The Life, Correspondence, & Collections of Thomas Howard, Earl of Arundel Cambridge, 1921. Reprint. New York, 1969.