This photo was taken on Ramsey Promenade during the 1914 TT races on the Isle of Man. From left to right: Dan O'Donovan, the Braid Brothers, James Norton and his father sitting inside the sidecar combination. The motorcycles would be TT Model 9's or 3 1/2 HP models while Pa Norton brought his Big Four. This is another pic of Ossie Braid on this very machine.
...same day, same people, except for James' father.
...and looking at the rider's number (59), this must be Dan at the 1914 TT.