Berengar I was King of Italy from 887 and Holy Roman Emperor from 915 until his death in 924. He is usually known as Berengar of Friuli, since he ruled the March of Friuli from 874 until at least 890,
Berengar's imperial seal
The so-called Cross of Berengar, said to have been Berengar I's pectoral cross and now in the cathedral of Monza
Some coins of Berengar's found in Hungary, possibly from payments made to Magyar raiders or mercenaries
Berengar portrayed as emperor (Berengarius Imperator) in a twelfth-century manuscript
Otto I, known as Otto the Great or Otto of Saxony, was East Frankish king from 936 and Holy Roman Emperor from 962 until his death in 973. He was the eldest son of Henry the Fowler and Matilda of Ring
Berengar I of Italy
…crown and the arrival of Magyar raiders in Western Europe. His death was followed by an imperial interregnum that lasted 38 years until the German King, Otto I, was crowned emperor in 962. Berengar's family was called the Unruochings after his grandfather, Unruoch II of Friuli. Berengar was a son of Eberhard…
Depiction of Otto on his seal in 968 with the inscription OTTO IMP AVG (Otto Imperator Augustus)
Genealogy of the Ottonians from the 13th century Chronica sancti Pantaleonis. Heinricus rex and Methildis regina can be seen in the double circle with Otto directly below them.
The confraternity book of the Abbey of Reichenau records the names of the Ottonian family and their most important helpers from 929. In the second column from the right Heinricus rex and his wife Mathild[e] reg[ina] are listed, then their eldest son Otto rex, already with the title of king.
Side view of the Throne of Charlemagne at Aachen Cathedral, where Otto was crowned King of Germany in 936