Robert Southwell - Fairly lengthy essay on his life and writings. From The Cambridge History of British and American Literature. - http://www.bartleby.com/214/0701.html
Robert Southwell (1561-1595) - Biographical and historical information, links to online texts, essays and criticism and further Internet resources. At luminarium.org. - http://www.luminarium.org/renlit/southwell.htm
Venerable Robert Southwell - Biography of the English poet, Jesuit, and martyr. He was hanged in 1595. Article from the Catholic Encyclopedia. - http://www.newadvent.org/cathen/14164a.htm