For All the Saints
- Brief biographies of Bl. Thomas Cottam and his companions in martyrdom Bl. Laurence Richardson and William Filby.
- http://www.saintpatrickdc.org/ss/0530.htm#will

Catholic Encyclopedia
- Bl. Thomas Cottam, convert to Catholicism, entered the Jesuit novitiate, was ordained a priest. Imprisoned and tortured for a year and a half, he died a martyr in 1582.
- http://www.newadvent.org/cathen/14688a.htm