The rulers of "Francia Orientalis", who soon claimed the imperial title and wanted to reunify the Frankish Empire, dropped the name "Francia Orientalis" and called their realm the Holy Roman Empire (see History of Germany). The kings of "Francia Occidentalis" successfully opposed this claim and managed to preserve "Francia Occidentalis" as an independent kingdom, distinct from the Holy Roman Empire. The Battle of Bouvines in 1214 definitively marked the end of the efforts by the Holy Roman Empire to reunify the old Frankish Empire by conquering France.