found: Maccarrone, M. Papato e impero, 1959:p. 9 (Adriano IV)
found: New Cath. enc. 1981(Adrian IV, Pope; pontificate, 12/4/1154-9/1/1159; only English pope; b. Nicholas Breakspear between 1110 and 1120)
found: Dict. biog. degli Ital., 1960(Adriano IV, papa; b. Nicola Breakspear between 1110 and 1120, Abbot's Langley, Hertfordshire)
found: GEV(Adriano, Papa, IV; d. Anagni, 1159; Nicolò Breakspear, only English pope)
found: DNB(Adrian IV; d. 1159; only English pope; early hist. obscure; name said to have been Nicholas Breakspear; d. 9/1/1159)
found: LC manual cat.(hdg.: Hadrianus IV, pope, d. 1159)