Henricus Valesius, the Latinized classical form of Henri Valois, a French philologist; Valois is a corruption of Val d'Oise, "Oise River Valley"
The validity of these arguments is currently in doubt, mainly due to the identification of Ptolemy's Leukaristos, located at a latitude similar to that of Kalisz, with the name Laugaritio/Leugaritio certainly referring to the town of Trenčín in Slovakia (this identification is confirmed by a rock inscription made in the winter of 179/180 CE by a Roman military unit, and the biography of the unit's commander, M. Valesius Maximianus, carved on his tomb in Diana Veteranorum in today's Algeria).