Bernard Tanguy (1990) : Guirlisquin, c. 330; Guirlisten, 1371; Guerlisquin, 1425, 1444, 1453; Guerlisquin, Guerlisquen, 1430; Guernlisquin, 1481; Guerlisquin, 1512, 1682. Talvoudegezh : gwern +  Lesquin / Lesquen, pe Glisquin, anv den