In 946, Richard agreed to be a ward of Hugh, Count of Paris. He then allied himself with the Norman and Viking leaders. Together they drove Louis out of Rouen and took back Normandy by 947. In 962 Theobald I, Count of Blois, attacked Rouen. But Richard's army defeated them. Lothair king of West Francia stepped in to prevent any more war between the two. For the rest of his reign Richard chose not to make Normandy bigger. Instead he worked on making Normandy stronger.