As Preceptor of the Templars in France from 1143, he was one of the highest dignitaries of the Order when Robert de Craon died in 1147. He was chosen to succeed Robert, and as soon as he was elected, he accompanied Louis VII of France on the Second Crusade, and was among those sent ahead to Constantinople before Louis' arrival there. He later saved Louis during a battle with the Seljuk Turks in Pisidia.
According to the chronicler Odo of Deuil, Everard was extremely pious and valiant. He seems to have had a strong influence on Louis. After the failure of the crusade at the Siege of Damascus in 1148, Louis returned to France, followed by Everard, who was in charge of the king's treasury. Everard's Templars stayed behind and helped defend Jerusalem against a Turkish raid in 1149.
Back in France, Everard abdicated officially in 1151 and became a monk at Clairvaux, despite the protests of the Templars. He was succeeded by Bernard de Tremelay (who actually led the Order since Everard's departure in 1149) and died in 1174.