His grandfather died before his father was born and his grandmother remarried shortly thereafter to Granville Harcourt Vernon, MP.
[1] He gained the rank of Captain in the 1st Life Guards and President of the Hereford Territorial Army Association from 1904 to 1933.
[5] Together, they were the parents of four children:[1][6] In 1934, Sir John's portrait was painted by Philip de László.
In the portrait, he is seated "wearing the ceremonial uniform of the Life Guards with decorations, a black great coat over his shoulders, holding a sword in his left hand and a glove in his right resting on his knee".
[3] László had previously done a number of portraits for the family, including his wife in 1913, daughter Sylvia in 1924, and son Richard and daughter-in-law Lady Lettice.