This question concerns the family of Alfred Clarke, who served in the 4th Brigade of the Royal Artillery. They appear in some of my previous questions, including Were British Army families stationed overseas enumerated in any Census returns?
Three of the children -- Alfred Robert, Ellen Beatrice, and Walter Thomas -- appear on the same page of a baptism register in Ancestry's collection UK, British Army and Navy Birth, Marriage and Death Records, 1730-1960.
These are at the bottom of a page. I checked the following page but did not find any other Clarke records. (See the answer for the index page that points to these records.)
Ancestry's Source Citation information says:
The National Archives of the UK; Kew, Surrey, England; War Office: Royal Artillery Records of Service and Papers; Class: WO 69; Piece: Piece 554; Piece Description: Piece 554 (1843 - 1879)
I would like to find the corresponding item in TNA's Catalog at http://discovery.nationalarchives.gov.uk/
I searched for WO 69/554 plus the surname "Clarke" and found an entry for Alfred and Emily's marriage register, which (according to TNA at the time the catalog entry was written) has not yet been digitised:
This is from the catalog description of WO 69/554/30:
Register of Marriages and Baptisms, 4 Brigade Royal Artillery.
All the entries below appear on folio 30v. The folio number is to be found in a circle at the top right of each folio.
Entry 88: Charles SALTER, of 4 Brigade Royal Artillery, and Margaret CONSIDINE married on 10 November 1870 at Morristown Villa, Kildare.
Entry 89: Duncan McKENZIE, of 4 Brigade Royal Artillery, and Emma WHITE married on 13 November 1870 at Plymouth.
Entry 90: Alfred CLARKE, of 4 Brigade Royal Artillery, and Emily KNOWLES married on 24 January 1869 at Woolwich, Kent.
However, I don't expect all catalog records at an archive to have all the names of the people who are in the records.
What's the most efficient way to narrow down which register we've looked at, when the individual's name doesn't appear in the catalog?