Like Pope Innocent III ( 1198-1216 ) , Pope Gregory IX ( 1227-1241 ) and Pope Alexander IV ( 1254-1261 ) , he was a member of the land-owning family of the Conti , who held the titles of counts and dukes of Segni .
( 1198-1216 ) , he was a member of the family of the counts and dukes of Segni .