That's the chap -- Holman Fred Stephens (1868 -- 1931), son of the pre-Raphaelite artists Frederic George and Rebecca Clara Stephens: named after the painter Holman Hunt (most famous for The Light Of The World); Alfred Lord Tennyson was a family friend. One learns that Stephens as a child, was of great physical beauty, with long auburn hair -- thus called in the family circle, "Golden Holly". It does seem an unexpected metamorphosis for such a person: into a seemingly gruff, rather repressed military type -- his interests apparently limited to things military (the Territorial Army, his particular speciality), engineering, and his light railways; had no discernible use for anything "arty-farty". And he was reportedly a rather demanding and not always understanding boss; though with a kind heart which sometimes showed itself.
Your light railway to manage (and no sneaking off to paint bloody sissy pictures).