“The Arthur Llewelyn Davies family played an important part J.M. Barrie’s life. In 1901, he invited the Davies family to Black Lake Cottage, where he produced an album of captioned photographs of the boys acting out a pirate adventure, entitled The Boy Castaways of Black Lake Island.“
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Thank you to The Maresfield Gardens Noctambulist
Black Lake Cottage is in Farnham, Surrey, UK. If you look here http://weyriver.co.uk/theriver/wey_north_B.htm and search for Black Lake you will find a section on JM Barrie’s residence here. Map wise search for Tilford and look north by north west for Black Lake.