San Fernando Cathedral San Antonio TX San Fernando Cathedral was founded in 1731 by a group of 15 families who came from the Canary Islands at the invitation of King Phillip V of Spain and is the oldest, continuously functioning religious community in the State of Texas. This church was planned to be at the center of life in this city. The Cathedral building is also the oldest standing church building in Texas. San Fernando Cathedral at night on Christmas Eve. Christmas Eve service. The bones of the Alamo heroes lie here. William Travis, David Crockett and Jim Bowie, and others.