The surname PFALZGRAF has its origins in Germany, tracing back to the Middle Ages. It is derived from the German words "Pfalz" meaning "palace" and "Graf" meaning "count" or "earl." The name was initially a title bestowed upon nobles who served as administrators and judges in the imperial palaces or residences of German emperors and kings.

During the Holy Roman Empire, which lasted from the 9th to the 19th century, the Pfalzgrafen held significant power and authority within their respective territories. They wielded judicial and administrative responsibilities, acting as representatives of the emperor in certain regions. The title was hereditary, passing down through generations of noble families.

The earliest known record of the surname PFALZGRAF can be found in the Codex Diplomaticus, a collection of historical documents from the 9th to the 15th century. One notable example is the mention of Hermann Pfalzgraf von Sachsen, who lived in the 11th century and held the title of Count Palatine of Saxony.

As the Pfalzgrafen expanded their influence across various regions, the name took on different spellings and variations. In the 13th century, the Pfalzgrafschaft bei Rhein, or the County Palatine of the Rhine, was a prominent territory ruled by the Pfalzgrafen. This region gave rise to surnames like Pfalzgraf von Rhein and Pfalzgraf von Wittelsbach.

Notable individuals bearing the surname PFALZGRAF include Friedrich Pfalzgraf von Simmern (1459-1511), a German nobleman and military leader; Johann Pfalzgraf von Gelnhausen (1490-1542), a German humanist and scholar; and Maria Pfalzgräfin von Neuburg (1572-1616), a German princess and the first wife of Duke Maximilian I of Bavaria.

In the 16th century, the Pfalzgraf von Zweibrücken family played a significant role in the history of the Palatinate region. One member, Johann I Pfalzgraf von Zweibrücken (1510-1557), was a noted military commander during the Schmalkaldic War. Another notable figure was Friedrich III Pfalzgraf von Zweibrücken (1616-1667), who served as a Swedish field marshal during the Thirty Years' War.

While the title of Pfalzgraf gradually diminished in importance after the dissolution of the Holy Roman Empire in the early 19th century, the surname PFALZGRAF continued to be used by descendants of these noble families. It remains a recognized surname in Germany and other German-speaking regions, bearing a rich historical legacy of power, authority, and nobility from the medieval era.