you don't give any manx connection or dates/places - however the Manx Walkingtons would appear to be linked to a james Walkington drummer at Castle Rushen (1699-1710) who is bur Malew 30 Aug 1710 - the name starts to appear in records from about this date but very few left by 1851

use saerch page on Manxnotebook (tabline above)

The McClures could be of Scots descent (? from Alexander Mcclure) but need names + dates