Note 2 — HOW THE BRAZOS RIVER GOT ITS NAME
Reading edition
But why the arms de Dios? asks legend. I have heard that Corpus Christi was named through belief that the sacred words would act as a protection against harm to the inhabitants of the place. Probably the old custom, still maintained in Catholic countries, of giving holy or sainted names had its origin in some such belief. Many other streams in Texas than the Brazos were given holy names; as, the Trinidad (Trinity), the Navidad (Nativity), and the Arroyo de las Benditas Animas (Creek of the Blessed Souls). Thrall says that the Trinidad and Navidad were so named because they were discovered on Trinity Sunday and Christmas day respectively.2 He offers no authority.