Kemp Malone first made the connection between Artorius and King Arthur in 1924. Noting that the Welsh name "Arthur" plausibly derives from the Latin "Artorius", Malone suggested that certain details of Castus' biography, in particular his possible campaign in Brittany and the fact that he was obliged to retire from the military (perhaps because of an injury), may have inspired elements of Geoffrey of Monmouth's depiction of King Arthur. Later scholars have challenged the idea, based on the fact that Artorius lived two to three centuries before the period typically associated with Arthur, and the fact that the parts of the inscriptions ostensibly similar to Arthur's story are open to interpretation.