Thanks, Jack. But if this is the tune you mean, it doesn't sound at all like what I'm thinking of:

http://abcnotation.com/tunePage?a=tunearch.org/wiki/More_n%27ighean_ghiberlain.no-ext/0001

This is more like it:

https://tunearch.org/wiki/Napoleon_Crossing_the_Alps_(1)

A 30-second sample of the Gibson-Camp version can be heard at Amazon:

https://www.amazon.com/Bob-Gibson-Camp-Gate-Horn/dp/B00124DU14/ref=sr_1_1?crid=104V0HFN7E6IB&keywords=bob+gibson+%26+bob+camp&qi