Links:

http://en.wikipedia.org/wiki/Thomas_of_Brotherton

http://www.findagrave.com/cgi-bin/fg.cgi?page=gr&GRid=10962884

http://greatyarmouthhistory.com/perlustration/Earls%20of%20Norfolk/ThomasDe%20Brotherton,%20Earl%20of%20Norfolk.htm

http://histfam.familysearch.org/getperson.php?personID=I1179&tree=EuropeRoyalNobleHous

http://www.thepeerage.com/p10192.htm

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Citations

1. [S106] Royal Genealogies Website (ROYAL92.GED), online ftp://ftp.cac.psu.edu/genealogy/public_html/royal/index.html. Hereinafter cited as Royal Genealogies Website.

2. [S11] Alison Weir, Britain's Royal Family: A Complete Genealogy (London, U.K.: The Bodley Head, 1999), page 85. Hereinafter cited as Britain's Royal Family.

3. [S6] G.E. Cokayne; with Vicary Gibbs, H.A. Doubleday, Geoffrey H. White, Duncan Warrand and Lord Howard de Walden, editors, The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, Extant, Extinct or Dormant, new ed., 13 volumes in 14 (1910-1959; reprint in 6 volumes, Gloucester, U.K.: Alan Sutton Publishing, 2000), volume III, page 338. Hereinafter cited as The Complete Peerage.

4. [S6] Cokayne, and others, The Complete Peerage, volume II, page 308.