Colonel Henry Halford (1828–1897) John Collier (1850-1934)

The picture has something of this: people, man, wear, portrait, weapon, music, musician, veil, facial hair, mustache, gun, elderly, lid, recreation, leader, outdoors, facial expression.
Perhaps it’s a painting of a man with a long white beard sitting in a chair with a rifle in his lap and holding a gun in his right hand.