Blessed John Duckett and Ralph Corby (Corbington), SJ
- Profiles of the martyrs.
- http://www.saintpatrickdc.org/ss/0907.shtml#ralp

John Duckett's Cross
- A Celtic-style cross stands about a mile outside Wolsingham, marking the spot where Duckett was arrested. Background information on the priest and on the Jesuit Ralph Corby who was martyred with him.
- http://www.wolsingham.net/wolsingham/duckett.htm

Blessed John Duckett and Blessed Ralph Corby
- The story of these two brave priests. For children.
- http://www.holyspiritinteractive.net/kids/saints/0907_duckett.asp

Blessed John Who?
- Blessed John Duckett School tells about their patron. There's a portrait too.
- http://www.blessedjohnduckett.durham.sch.uk/John2.htm

Venerable John Duckett
- Biographical sketch of the English priest and martyr.
- http://www.newadvent.org/cathen/05183b.htm

John Duckett
- Profile of the martyr.
- http://www.catholic-forum.com/saints/saintj9d.htm