In 1602, San Pedro de Mocama was reported to have 300 resident Christians, while 792 were reported to attend mass there on major feast days. A number of visitas were recorded as attached to San Pedro early in the 17th century, on San Pedro (Cumberland) Island and elsewhere. Puturiba, where a mission had been established in 1595, was listed as a visita with a church building under San Pedro. Olatayco and Alatico were reported as visitas under San Pedro in 1604, with a church located at Olatayco. The two places appear to have been adjacent to each other, or the names may have been variant names for the same place. Hann suggests that "Olacayco" was based on "Holato" (chief) "Yco". Hann quotes Deagan as saying Olacayco/Alatico were "probably Cascange towns". By 1603 the church at San Pedro was old enough that the governor proposed building a new church. Bishop Altamirano visited the mission at San Pedro in 1606, confirming natives on both visits. San Pedro was named as a mission with a resident friar in 1655. There is some evidence that the San Pedro mission was moved south into what is now Florida sometime between 1650 and 1675. and that the mission San Felipe de Athuluteca was later established on its old site. A site near the south end of Cumberland Island, on Dungeness plantation, has been identified as the probable site of Tacatacuru, the town in which San Pedro was situated, but the site of the mission appears to have eroded away.
