Pastor Ritland

I am looking for information on a Pastor Ritland. His first name may have been Karl (Carl), and he must have been a pastor at a church in the US. He was probably from Suldal in Rogaland, and he must have been born around 1880. He was a twin. Around 1910 he visited Norway and took a good many photographs from the county of Suldal and the hamlet Sand. After his return to the US, he made up several albums and sent them back to Norway. These albums have now turned up, and the pictures have been scanned by local cultural workers at Sand. Unfortunately, the identity of Pastor Ritland is a mystery. I would greatly appreciate any information about him!