All that can presently (May 2013) be gleaned about by internet searching is that Roy Roberts is the one-off composer of Peach Blossoms (1918).
Surfers are welcome to contribute information about this composer.
This list is arranged in chronological order and contains 1 work by Roy Roberts (1906-1975).
It does not claim to be complete and represents only the number of items located. Keys:ER