« Reply #3 on: Saturday 08 May 21 20:26 BST (UK) »
I've been looking at baptisms to Michael & Mary.
Margaret born 15 Feb 1861 bp 17 March at Secunderabad father Gunner 3rd battalion Madras Artillery
Joseph Charles born 11 Sept 1862 bp 2 Oct 1862 at Secunderabad father Gunner Royal Artlliery
so change of regiment looks to fit.

Other children
Catherine born 16 Jan 1853 bp 2 Feb 1853
Mary Ann Maria born 3 May 1865 bp 15 June 1865 Bangalore - she married James Cranston 24 Dec 1879 at Trimulgherry
Christopher John born 22 Nov 1866 bp 3 Jan 1867 Bangalore - buried 25 March 1867 Bellary
Christopher John born 28 Feb 1868 bp 4 June 1868 St Thomas Mount buried 2 July 1868
William Bernard born 18 April 1872 bp 12 May 1872 Thayet Myo Burma buried 3 Sept 1872 St Thomas Mount
George Henry born 27 Oct 1873 bp 21 Nov Thayet Myo
Margaret married William Stevens 5 Jan 1876 at Chudderghaut
Cornwall: Allen, Bevan, Bosisto, Carnpezzack, Donithorn, Huddy, James, Retallack, Russell, Vincent, Yeoman
Cards: Thomas (Llanbadarn Fawr)
Glam: Bowler, Cram, Galloway, James, Thomas, Watkins
Lincs: Coupland, Cram
Mon: Cram, Gwyn, John, Philpot, Smart, Watkins
Pembs: Edwards (St. Dogmael's)
Yorks: Airey, Bowler, Elliott, Hare, Hewitt, Kellett, Kemp, Stephenson, Tebb