Ralph St. Louis Pieris Deraniyagala, CBE was a Ceylonese lawyer and civil servant.
Born to Sir Paul Edward Pieris, civil servant and scholar, and Lady Hilda Obeyesekere Pieris, his siblings included Paulus Edward Pieris Deraniyagala, Justin Pieris Deraniyagala and Miriam Pieris Deraniyagala.
He gained a BA and qualified as a barrister.
[1] In July 1947, he was appointed Clerk of the State Council and continued as Clerk to the House of Representatives until his retirement in October 1964.
[2][3] He was appointed Member of the Order of the British Empire (MBE) in the 1948 Birthday Honours, an Officer (OBE) in the 1953 Coronation Honours and Commander (CBE) in the 1954 New Year Honours.