Hi Esther
JM Barrie lived in two houses in London:
- 133 Gloucester Road in Kensington, London SW7 4TH (where he wrote The Little White Bird - among other works) from 1895-1902
- 100 Bayswater Road (also known as Leinster Corner) in Bayswater, London W2 3HJ (which has a blue plaque to his name and where he wrote Peter Pan), from 1902 to 1909
The place he lived at the longest however is his flat at the Adelphi Terrace, 3 Robert Street, London WC2N 6RL, from 1909 to 1937 (there is another plaque to his name).
You can see photos of these on http://www.flickr.com/photos/24671749@N07/sets/72157626324576283/with/5729393629/
Peter Llewelyn Davies killed himself at Sloane Square tube station.