Robert Lyon Dickie was a Scottish Canadian volunteer. He immigrated to Canada in 1921, and married Violet Woodman in 1928. He fought with the Mackenzie Papineau Battalion, but was taken prisoner in March 1938. He was imprisoned at San Pedro de Cardeña, where he was the contact for the Communist Party. He was released during a prisoner exchange in 1939, and returned to Canada soon after.
Read his testimony about his time in San Pedro de Cardeña
See his full record here