Mis-filed in the MAR section of the WW1 Service Records (WO 363):

The Death Certificate of Robert William ALLAN, died Oct 1917 aged 1 month, Hillingdon, Uxbridge.
Son of WILLIAM ALLAN (Pte 16122 Rifle Brigade) & LILY E.

(May save someone 6!)

Anc****y, MAR, pages 15783-15786