https://en.wikipedia.org/wiki/Maastricht
Toponymy. Maastricht is mentioned in ancient documents as [Ad] Treiectinsem [urbem] ab. 575, Treiectensis in 634, Triecto, Triectu in 7th century, Triiect in 768–781, Traiecto in 945, Masetrieth in 1051.. The place name Maastricht is an Old Dutch compound Masa-(> Maas "the Meuse river") + Old Dutch *treiekt, itself borrowed from Gallo-Romance *TRA(I)ECTU cf. its Walloon …