found: Franchi, A. La svolta politico-ecclesiastica tra Roma e Bisanzio (1249-1254), 1981: t.p. (Federico II) p. 7 (d. 12/13/1250)
found: Brion, M. Frédéric II de Hohenstaufen, c1978: t.p.
found: Hauziński, J. Polityka orientalna Fryderyka II Hohenstaufa, 1978: t.p. (Fryderyka II Hohenstaufa)
found: Relazioni e dibattiti sull'opera e la personalità di Federico II di Svevia, 1998: p. 229 (d. 1250)
found: Friedrich II. von Hohenstaufen, 2000: p. 156 (b. Dec. 26, 1194 in Iesi) p. 157 (d. Dec. 13, 1250 in Castel Fiorentino, Apulien)
found: Qvamme, B. Fredrik II: cover (Fredrik II (1194-1250); King of in Sicily in 1197 & German Emperor in 1220)
found: Die Urkunden Friedrichs II, 2002: t.p. ( ... Friedrichs II) p. 12 (Fredericus ... Romanorum imperator; in 1198) p. 286 (Fridericus ... Romanorum imperatorem electus; in 1212)
found: Wikipedia home page, via WWW, July 11, 2003 (Friedrich II., German king, emperor of the Holy Roman Empire; b. Dec. 26, 1194 in Jesi, near Ancona, Italy, d. Dec. 13, 1250)
found: Friedrich II web page, via WWW, July 11, 2003 (Friedrich II., Heiliges Römisches Reich, 1194-1250)
found: Sobre los orígenes y actualidad del estado, 2009: t.p. (Federico II de Suabia) p. 11, etc. (b. Dec. 1194 in Jesi; d. Dec. 13, 1250)
Frederick II, Holy Roman Emperor, 1194-1250
