From the Niagara Falls Review:
This photograph was taken Oct. 19, 1919, at Dr. Harry Grant’s home, Victoria Place, which was located on the brow of the high bank overlooking Queen Victoria Park, about half way between the foot of Robinson Street and Clifton Hill.
The man in the centre of the group, with his right hand on his lapel, is H.R.H. Edward, the Prince of Wales, who was on an official visit to Niagara Falls that day.
Dr. Grant, an oculist who had practised in Buffalo, was hosting a luncheon at Victoria Place with the 25-year-old popular prince as the guest of honour.