An archaic Welsh name or term, possibly related to historical figures or place names in Wales.
From Welsh cad (battle) + gwawl or wal (wall/fort). This appears to be a proper name with potential meaning in Old Welsh relating to defensive structures.
Cadwal appears in Shakespeare's Cymbeline as a character's alias, showing how Welsh names fascinated Elizabethan audiences even when they didn't quite understand them correctly.
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