Conan Meriadoc, the mythic founder of the house of Rohan, is mentioned by medieval Welsh sources as having led the settlement of Brittany by mercenaries serving Maximus. The Welsh text "The Dream of Maxen", which contains semi-factual information about the usurpation of Maximus, states that they married native women after cutting out their tongues to preserve the purity of their language. This can be interpreted as a legend formulated in order to explain the Welsh (Brythonic) name for Brittany, "Llydaw", as originating from "lled-taw" or "half-silent". In fact, the term "Llydaw" or "Ledav" in early Breton probably derives from the Celtic name Litavis.