Thank you for the information Mary. I have been looking at the Manx Notebook again and now have some interesting information on Duke Street. I also found the following under Gardeners in Brown's Directory, 1881/2
Todd, John, Athol Cottage, off Victoria-road
Todd, Margaret, Strawberry Gardens, Victoria-roads. Margaret died in 1884 so I assume others in the family took over.
Denise Larcombe (nee Kermode)