Toponymy
The place-name Bruges is first mentioned as Bruggas, Brvggas, Brvccia in 840 - 875, then Bruciam, Bruociam in 892, Brutgis uico end 9th century, in portu Bruggensi around 1010, Bruggis in 1012, Bricge in 1037 (Anglo-Saxon chronicle), Brugensis in 1046, Brycge 1049 - 1052 (ASC), Brugias in 1072, Bruges in 1080 - 1085, Bruggas around 1084, Brugis in 1089, Brugge in 1116.
Probably from Old Dutch, cf. Middle Dutch brucge, brugge (or brugghe, brigghe, bregghe, brogghe). cf. Dutch bruggehoofd "beachhead", Dutch Brug "bridge"), The Dutch word brug(ghe) would be variant form from the south. from Proto-Germanic *brugjō- "bridge", "harbour bridge", "veenbrug" (cf. English bridge)
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