▁Latin ▁Church ▁of ▁the ▁Catholic ▁Church ▁in ▁the ▁Philippines . ▁ ▁It ▁was ▁ere cted ▁on ▁ 3 1 ▁January ▁ 1 9 7 0 ▁from ▁territory ▁of ▁the ▁then ▁Roman ▁Catholic ▁Dioc ese ▁of ▁T ug u eg ara o ▁and ▁it ▁covers ▁the ▁entire ▁civil ▁Province ▁of ▁Isabel a . ▁ ▁It ▁is ▁a ▁suff rag an ▁dioc ese ▁of ▁the ▁Roman ▁Catholic ▁Arch di oc ese ▁of ▁T ug u eg ara o . ▁ ▁The ▁Dioc ese ▁has ▁had ▁no ▁juris dict ional ▁changes . ▁The ▁seat ▁of ▁the ▁Dioc ese ▁used ▁to ▁be ▁located ▁in ▁Saint ▁Ferdinand ▁Par ish ▁Church ▁in ▁Il agan ▁City ▁before ▁being ▁transferred ▁to ▁the ▁Gam u ▁C athedral ▁( C athedral ▁of ▁Saint ▁Michael ▁the ▁Arch angel ) ▁in ▁Gam u , ▁Isabel a , ▁in ▁ 2 0 1 3 . ▁ ▁Most ▁Rev . ▁David ▁William ▁V . ▁Antonio , ▁S . Th . D ., ▁D . D . ▁was ▁installed ▁as ▁the ▁fifth ▁Bishop ▁of ▁Il agan ▁on ▁February ▁ 1 2 , ▁ 2 0 1 9 . ▁ ▁Ord in aries ▁M s gr . ▁Ric ardo ▁Jam ias , ▁D . P ., ▁S . T . L . ▁( App oint ed ▁as ▁the ▁first ▁Vic ar ▁General ▁under ▁the ▁Dioc ese ▁of ▁T ug u eg ara o ) ▁Most ▁Rev . ▁Francisco ▁R aval ▁Cru ces ▁( 4 ▁March ▁ 1 9 7 0 ▁– ▁ 2 2 ▁August ▁ 1 9 7