This post is a work in progress. At the time that I published it, I hadn’t managed to identify any of the men in the photo. A resourceful reader in the UK, Michael, quickly identified two of them. The man seated in the middle of the second row is Frederic Thesiger, Viscount Chelmsford, who was Viceroy of India from 1916 until 1921. The man to the left of him, wearing a bow tie, is Alexander Muddiman.
Another astute reader in the UK, Val, identified the location as Gorton Castle in Shimla, Himachal Pradesh, India. Shimla (spelled Simla prior to 1972) was the summer capital of British India after 1864.
The photo came to me from Texas in 2020.
Post last updated July 7, 2022.