Editing Pope Celestine II (section)

==Early life==
Guido di Castello, possibly the son of a local noble, Niccolo di Castello,<ref name="Mann, pg. 105">Mann, pg. 105</ref> was born either in [[Città di Castello]], situated in Paterna Santa Felicità upon the [[Apennines]], or at [[Macerata]] in the [[March of Ancona]].<ref name="Mann, pg. 105">Mann, pg. 105</ref><ref>According to Mann (pg. 104), there is a local tradition that Celestine II, when he became pope, presented the cathedral in Città di Castello with a sculptured silver altar-front.</ref>

Guido had studied under [[Pierre Abélard]], and eventually became a distinguished master in the schools.<ref name="Mann, pg. 105">Mann, pg. 105</ref> Eventually Guido began his career in [[Rome]] as a [[subdeacon]] and a ''scriptor apostolicus'' under [[Pope Callixtus II]].<ref name="Mann, pg. 105">Mann, pg. 105</ref> He was created [[Cardinal-Deacon]] of [[Santa Maria in Via Lata]] by [[Pope Honorius II]] in 1127;<ref name="Mann, pg. 106">Mann, pg. 106</ref> as such, he signed the papal bulls issued between 3 April 1130 and 21 December 1133.<ref>J.M.Brixius, ''Die Mitglieder des Kardinalkollegiums von 1130–1181'', Berlin, 1912, p. 35 no. 19</ref> In the double [[papal election, 1130|papal election of 1130]] he joined the obedience of [[Pope Innocent II]]. In December 1133 Innocent promoted him to the rank of [[Cardinal-Priest]] of [[San Marco, Rome|San Marco]].<ref name="Mann, pg. 106">Mann, pg. 106</ref> He signed the papal bulls as ''S.R.E. indignus sacerdos'' between 11 January 1134 and 16 May 1143.<ref>J.M.Brixius, ''Die Mitglieder des Kardinalkollegiums von 1130–1181'', Berlin, 1912, p. 35 no. 19 and p. 43 no. 23, indicates that Guido del Castello and ''Guido S.R.E. indignus sacerdos'' were two different persons; but see L. Spätling, ''Kardinal Guido und seine Legation in Böhmen-Mähren (1142–1146)'' in: ''[[Mitteilungen des Instituts für österreichische Geschichtsforschung]]'', Wagner'sche Universitäts-buchhandlung, 1958, p. 310</ref> As the cardinal of San Marco's, he supported Innocent's claims with regards to [[Monte Cassino]], and as a mark of his confidence in him, Innocent made Guido the [[Rector (ecclesiastical)|rector]] of [[Benevento]]. Afterwards, he made him a [[papal legate]] to [[France]] in 1140.<ref name="Thomas, pg. 91">Thomas, pg. 91</ref>

He participated in the [[papal election, 1143|papal election of 1143]], the first undisturbed papal election that Rome had seen for eighty-two years,<ref name="Mann, pg. 103">Mann, pg. 103</ref> and was elected pope two days after the death of Innocent II,<ref name="Mann, pg. 102">Mann, pg. 102</ref> on 25 September 1143,<ref name="Thomas, pg. 91">Thomas, pg. 91</ref> taking the name of Celestine.<ref name="Mann, pg. 103">Mann, pg. 103</ref>