Sidney John Coltham ("Sydney" after 1913) was trained at the Canterbury Cathedral Choir School, and became a choir soloist first there and from 1912 at Westminster Abbey in London. At the same time, he was also a soloist with the Royal Choral Society, sang oratorio all over England, ballad concerts at Royal Albert Hall, and even appeared with the British National Opera Company. He was a prolific recorder for the Gramophone Company; his last records were issued by Piccadilly under the pseudonym "Frank Chamberlain". Coltham was also a radio pioneer. He gave his last concert in 1931 in Bristol.
Anton Bieber has provided the three song recordings and relative label scans. Thank you!