The name Reginal has its origins in the Latin language, and it is derived from the word "regius," which means "royal" or "kingly." This connection to royalty and nobility suggests that the name may have been used in ancient times by those of high social standing or noble birth.

Reginal can be traced back to the Early Middle Ages, around the 5th to 10th centuries CE. During this period, the name was particularly popular in regions where Latin influences were strong, such as parts of present-day Italy, France, and Spain.

One of the earliest recorded instances of the name Reginal can be found in the writings of the 6th-century historian Gregory of Tours, who mentioned a Frankish nobleman named Reginal. This historical reference suggests that the name was in use among the Frankish aristocracy during the Merovingian dynasty.

In the 9th century, there was a notable figure named Reginal of Prüm, who was a Benedictine monk and the Abbot of the Prüm Abbey in present-day Germany. He played a significant role in the Carolingian Renaissance and was renowned for his scholarship and leadership.

Another historical figure bearing the name Reginal was Reginal d'Aubonne, a 12th-century French nobleman and crusader. He participated in the Third Crusade (1189-1192) and fought alongside Richard the Lionheart, the King of England.

In the 13th century, there was a prominent Italian scholar and philosopher named Reginal of Piperno, who was a member of the Dominican Order. He made significant contributions to the field of logic and was highly regarded in academic circles during his time.

Reginal Pole, born in 1500, was a prominent figure in England during the Tudor period. He was a Catholic cardinal, an adviser to King Henry VIII, and later played a crucial role in the English Reformation under the reign of Queen Mary I.

These examples demonstrate the historical usage and significance of the name Reginal across various regions, time periods, and contexts, ranging from nobility and religious figures to scholars and philosophers.