He was cardinal-nephew of Pope Clement III, his uncle, who elevated him in September 1190. In older historiography he is erroneously listed as Niccolo Boboni and nephew of Pope Celestine III. He subscribed papal bulls as S.R.E. diaconus cardinalis between October 23 and December 19, 1190, as cardinal-deacon of Santa Lucia in Orthea on February 17, 1191, and finally as cardinal-deacon of Santa Maria in Cosmedin between May 15, 1191 and August 4, 1200. He died before December 23, 1200.
- Maleczek, W., 1984: Papst und Kardinalskolleg von 1191 bis 1216, p. 97-98. Vienna
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