The name Adelaida has its roots in the Germanic languages, deriving from the Old German words "adal" meaning "noble" and "leid" meaning "path" or "journey". It is believed to have originated around the 9th century AD in regions of present-day Germany and northern France.

One of the earliest recorded instances of the name Adelaida can be found in the "Vita Karoli Magni" (Life of Charlemagne), written by the monk Einhard in the early 9th century. This biographical work mentions Adelaida as the daughter of King Pippin III of Italy, who later became the wife of the Frankish king Berengar I.

In the 11th century, the name Adelaida gained prominence when Adelaida of Burgundy, also known as Adelaide of Susa (1092-1154), became the Countess of Savoy and played a significant role in the political affairs of the region. Her influence and patronage of religious orders contributed to the popularity of the name.

Another notable figure in history bearing the name Adelaida was Adelaida of Anjou (1103-1154), who was the Queen of France as the wife of King Louis VI. She is remembered for her involvement in the political affairs of the kingdom and her efforts to promote the arts and culture.

In the 13th century, Adelaida of Meissen (1201-1272) was a German noblewoman who served as the Abbess of the Quedlinburg Abbey. Her leadership and piety helped to further establish the name's association with nobility and religious devotion.

During the Renaissance period, the name Adelaida was favored by Italian nobility, as exemplified by Adelaida Gonzaga (1545-1612), a member of the prominent Gonzaga family of Mantua. She was renowned for her patronage of the arts and her influential role in the cultural life of the Italian Renaissance.

These are just a few examples of the historical figures who bore the name Adelaida, which has been carried through various cultures and time periods, reflecting its enduring connection to nobility, leadership, and cultural significance.