The London Gazette shows a John Stanley Chivers being made a probationary Lt. RFA Dec. 1915 (E. Lancs. Howitzer Bde.).
He appears to be the one born Chesterton Cambs. 1892.
I think he married a Mary G Bird in Cambs. 1919.
He may be the Stanley Chivers that took over from his father John after the war.
Edit:
1911 census says he is.
Info:
42nd Division from pre-war . Originally designated 4th East Lancs Howitzer Brigade, and armed with 4 5-inch Hows. Rearmed with 4.5-inch Hows in 1916 after withdrawal from Gallipoli. Broken up 26/12/1916.
ring any bells?