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
Louis the Blind was king in Provence and Lower Burgundy from 890 to 928, and also king of Italy from 900 to 905, and also the emperor between 901 and 905, styled as Louis III. His father was king Boso
Berengar I of Italy
…compensated for the actions of the previous year by dispensing great gifts. In June or July, Berengar was again at the emperor's side at Kirchen, when Louis of Provence was adopted as the emperor's son. It is sometimes alleged that Berengar was pining to be declared Charles' heir and that he may in fact have been so…
French denier minted in the name of Louis III. Legend: ☩ lvdvvicvs imp(erator)
Denier Chinon 954, obverse