Complex sentence: Ceneda began as a suffragan of the patriarchate of Aquileia until the latter's suppression in 1751, and from 1752 until 1818 of the archdiocese of Udine.
Split into simpler sentences: Ceneda began as a suffragan of the patriarchate of Aquileia until the latter's suppression in 1751. From 1752 until 1818 Ceneda was a suffragan of the archdiocese of Udine.