Catholic Encyclopedia: St. Wilfrid: Biographical article on this abbot and bishop, who died in 709.
Catholic Online: St. Wilfrid: Biographical sketch.
Encyclopædia Britannica: Wilfrid: Short biographical essay from the 11th edition, 1911.
St. Wilfred the Elder: Two-part biography of the seventh-century Bishop of York, based on ECS Gibson's "Northumbrian Saints."
The Ecole Glossary: Wilfrid: Short biography of the saint, by Karen Rae Keck.
Wilfrid (Walfridus, Willferder) of York: Fairly lengthy biographical essay.
Wilfrid, Archbishop of York: Biographical portrait. Includes prayers in traditional and contemporary language.
Wilfrid, Saint: Brief biographical entry in the Columbia Encyclopedia.