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The plaque is definitely originally from Moseley Road Congregational Church. It was proposed in 1917 by the father of Sidney Currie Betts, of the 7th Rifle Brigade, who died on 15th April 1917. The church decided to wait until the end of the war before erecting a memorial.
The church magazine of January 1920 lists 30 names of those killed in the war. 25 are on the memorial, which was unveiled the following year (3 were still alive, one seems to have been mistaken for someone else, and one is untraced). There are several misspellings in the magazine list.
There is at least one misspelling on the memorial - A. Pepperill was Alfred Pepperell RAMC 104911 of 233 Grange Road Kings Heath. He had a certificate from the St. John's Ambulance Brigade. He worked for the Birmingham branch of the Liverpool, London and Globe Insurance Company before the war. After enlisting on 19th November 1915, he served in France for three months. Alfred was on the Hired Transport (troopship) Transylvania which was torpedoed on 4th May 1917 in the Mediterranean en route to Egypt. There were thousands of men on the ship, and 300 were lost. Survivors were picked up by a Japanese destroyer (an ally in the war). Among those who were presumed to have died drowned was Alfred Pepperell. Bodies of the dead in some cases floated both to Italy and to Spain, and the men are buried in those countries, but Alfred was not one such.
Alfred Pepperell is also commemorated at the Friends' Institute, Highgate, on the Birmingham Central School memorial (now at Byng Kendrick school) and at All Saints', Kings Heath. His brother Raymond served in Mesopotamia with the Dorset Regiment.