The name Dagoberto has its origins in the Germanic language, derived from the elements "dag" meaning "day" and "berht" meaning "bright" or "shining." This suggests that the name likely originated among ancient Germanic tribes, such as the Franks or Visigoths, sometime during the early medieval period.

The earliest recorded use of the name Dagoberto can be traced back to the 6th century, when it was borne by Dagoberto I, a Frankish king who ruled from 629 to 639 AD. This suggests that the name was already in use among the Franks during the Merovingian dynasty.

Another notable historical figure with the name Dagoberto was Dagoberto II, also a Frankish king, who ruled from 676 to 679 AD. His reign was marked by conflicts with the nobility and the growing power of the mayors of the palace.

In the 8th century, Dagoberto III, a member of the Merovingian dynasty, briefly held the title of king of the Franks from 711 to 715 AD. However, his reign was largely symbolic, as the real power was held by the mayors of the palace, who would eventually establish the Carolingian dynasty.

Another notable figure with the name Dagoberto was Dagoberto IV, also known as Chilperic II, who was a Frankish king who ruled from 715 to 721 AD. His reign was marked by conflicts with the Carolingian mayor of the palace, Charles Martel.

In later centuries, the name Dagoberto remained in use, though less prominently. One example is Dagoberto Godoy (1768-1851), a Chilean military officer and politician who served as the country's first Vice President from 1831 to 1841.

While the name Dagoberto has Germanic roots, it has also been adopted and used in various other cultures and languages, particularly in the Romance language-speaking regions of Europe and Latin America, where it has undergone slight variations in spelling and pronunciation.