[1] Born on 26 August 1891 in Chertsey, Surrey, Henry Grierson was educated at Bedford School.
E. H. D. Sewell, a friend who lived locally, thought he should have been in the school cricket eleven in 1906, aged 15, on the strength of his consistent bowling.
[3] He was also a rugby union player, for Bedford, Leicester and Rosslyn Park F.C..[4] In World War I, Grierson was recruited into "Mobbs' Own", the pals battalion of the Northamptonshire Regiment raised by his friend Edgar Mobbs.
[8] In 1936, at the age of 45, Grierson concluded that if he could "raise a sufficient number of good players of forty and over, we might be sharp enough to handle some of the school sides".
[11] The marriage of Henry Grierson and Eleanor Lilian Banister, known as Nancy, at Horsell church, was announced in August 1915;[12] it was registered in September.