Borrowings into English

Europe: the Celtic languages

(1) Breton through French: bijou, dolmen, menhir.
(2) Celtic before Gaelic, Welsh, Breton, and Cornish, and through Latin, French, and Old English: ambassador/embassy, bannock, bard, bracket, breeches, car/carry/career/carriage/ cargo/carpenter/charge, crag, druid, minion, peat, piece, vassal/valet/varlet.
(3) Cornish: porbeagle, wrasse.
(4) Gaelic, general: bog, cairn, clarsach, ceilidh, coronach, crag, crannog, gab/gob, galore, skene, usquebaugh/whisk(e)y; Irish: banshee, blarney, brogue, colleen, hooligan, leprechaun, lough, macushla, mavourneen, poteen, shamrock, shebeen, shillelagh, smithereens, spalpeen, Tory; Scottish: caber, cailleach, cairngorm, clachan, clan, claymore, corrie, glen, loch, lochan, pibroch, plaid, ptarmigan, slogan, sporran, strath, trews, trousers.
(5) Welsh: bug, coracle, corgi, cromlech, cwm, eisteddfod, flannel, flummery.