Marcus Antonius Gordianus (Gordian III) - Summary of the life and times of the final Gordian Emperor. - http://www.roman-empire.net/decline/gordian-III.html
Gordian III - Wikipedia entry for this Roman Emperor. - http://en.wikipedia.org/wiki/Gordian_III
Gordian II - Wikipedia entry for this Roman Emperor. - http://en.wikipedia.org/wiki/Gordian_II
Gordian I - Entry for the Roman Emperor from Wikipedia. - http://en.wikipedia.org/wiki/Gordian_I
Gordian - Entry on the briefly reigning line of House Gordianus from the Catholic Encyclopedia. - http://www.newadvent.org/cathen/06648b.htm