A memorial notice in 'The Stage' (6 August 1925) gives his date of death as 5 August 1924.
"Kurzgefasstes Tonkünstler-Lexikon, 1971-1978:1. Teil (Rawlings, Alfred W.; d. Jan. 27, 1919 [actually date of brother's death]", "Times, Aug. 7, 1924:p. 1 (deaths: Rawlings, Edward St. Quentin; Alfred Rawlings, music composer, brother of the late Theo Bonheur; d. Aug. 4)" (LCCN)