Complex sentence: In October 1150, Pope Eugene III (1145--1153) created him cardinal deacon with the "Title of Santi Cosma e Damiano"; later he became cardinal priest with the "Title of St Mark".
Split into simpler sentences: In October 1150, Pope Eugene III created him cardinal deacon with the "Title of Santi Cosma e Damiano". Later he became cardinal priest with the "Title of St Mark".