In 1887, John Bartholomew's Gazetteer of the British Isles described Sleat like this:
Sleat, par., in SE. of Skye island, Inverness-shire, on Sound of Sleat, 39,959 ac., pop. 2060; contains the vil. of Isleornsay.
GB Historical GIS / University of Portsmouth, History of Sleat, in Highland and Inverness Shire | Map and description, A Vision of Britain through Time.
Date accessed: 29th April 2017
Click here for more detailed advice on finding places within A Vision of Britain through Time , and maybe some references to other places called " Sleat ".