between East and West Francia over Lotharingia were based on the fact that these were the old Frankish homelands of Austrasia, so possession of them was a matter of great prestige to their kings as true claimant of Frankish imperial legacy.

Several traditional views on nature and chronology of the final division of Lotharingia in 959-965 have been analyzed by modern scholars, who noted that some of the key sources for the period in question are preserved only as later