www.alphadictionary.com

Variant(s): ghillie
Function: noun
Etymology: Scottish Gaelic gille & Irish giolla youth, gillie
Date: 1705
1 : a male attendant on a Scottish Highland chief ; broadly : attendant 2 chiefly Scottish & Irish : a fishing and hunting guide 3 : a shoe with a low top and decorative lacing

Src: Merriam Webster

Originally suggested, with the h, by KatyBr, and re-suggested by me, here.

My favorite gillie was Golly, the gillie in the Scottish TV series, "Monarch of the Glen". Played masterfully by Alexander Morton, he was master of the wood, the hunt, the lakes, and streams. He was the only character that survived the whole series.

However, the word itself is Gaelic, meaning "a boy or lad", and etymologists seem not to have traced it back any further. Consequently, there is no story there.