sentences:  The Romans called the settlement at what is today Carlisle .This was originally thought to mean "wall[ed town] of Lugus" but has since been explained as a borrowed Brittonic placename reconstructed as *Luguwalion, meaning "[city] of Luguwalos", Luguwalos being a masculine Celtic given name meaning "strength of Lugus".The name apparently continued in use among Brythonic speakers in the Hen Ogledd and Wales and it was during that time that the initial element "caer" ("fort") was added.