The Commonwealth War Graves Commission (CWGC) website confirms that Captain William Brabazon Mather Jackson of the 2nd/6th Battalion Sherwood Foresters was the son of W. B. M. and Georgiana Jackson, of Glapwell Hall, Chesterfield, Derbyshire.

William Brabazon Mather Jackson was born in 1883 at Clay Cross, near Chesterfield, Derbyshire. His parents were William Birkenhead Mather Jackson (born Paddington, London 1865) and Georgiana Catherine Jackson nee Hallowes (born Flint, Flintshire, Wales 1864). They had married at the church of All Saints, Ennismore Gardens, Knightsbridge, London in 1892. The 1901 census found the 7-year-old William with his parents and siblings living at The Hall, Market Street, Clay Cross and shows that his father was a Mining Engineer. William was not with his family on census night 1911, by when they were resident in Walton Lodge, Walton, near Chesterfield.

The following notice appeared on page 5063 of ‘The London Gazette’ published on 7 July 1911: “6th Battalion, The Sherwood Foresters (Nottinghamshire and Derbyshire Regiment); William Brabazon Mather Jackson to be Second Lieutenant…... [Effective from] 1st June, 1911.”

The CWGC website confirms that William Brabazon Mather Jackson died, aged 23, on 28 April 1917 and that his remains are interred in Templeux-Le-Guerard British Cemetery,  “Templeux-le-Guerard [being] a village 26 kilometres east of Peronne, Somme Region, France.” 

The ‘Long. Long Trail’ website confirms that the date of Captain Jackson’s wounding and subsequent death coincide with the British Army’s pursuit of German forces: “when the enemy began his strategic withdrawal east from the Somme area…. to the Hindenburg Line” [during which] “….attacks took place at Villeret and Hargicourt quarries”.

The following appeared in the ‘Derbyshire Times’ of 10 August 1918:- “MEMORIAL TO CAPT. W. B. M. JACKSON UNVEILED IN WALTON MISSION CHURCH” “A stained glass window is one of the most lasting and beautiful memorials to our dead, and for centuries they have borne the records of our martyrs and heroes. This form of memorial has been chosen by Mr and Mrs W. B. M. Jackson, Walton Lodge, Chesterfield, to perpetuate the name of their son Captain W. B. M. Jackson, who died of wounds received in action. The memorial window, erected in the new Mission Church at Walton, was dedicated on Thursday night by the Rector of St Thomas’ Brampton [Chesterfield], the Rev. F. H. Burnside. Inscribed on a brass tablet is the undermentioned inscription:- ‘The East window of this church is erected by his parents and dedicated in loving honoured memory of William Brabazon Mather Jackson, Captain Sherwood Foresters, who died on April 28th 1917, of wounds received in action on April 27th 1917 at Hargicourt Quarries, Villeret, France aged 23 years. He gave his heart to his home, his life for his King and Country, and his Soul to his God’.”

The website for the church of St John, Walton, confirms that, the church building in which it was originally located having been demolished in 1938 for road widening, and its replacement also since then, the William Brabazon Mather Jackson stained glass window is now in the new St Johns church.