Robertians

The Robertians (sometimes called the Robertines in modern scholarship) are the proposed Frankish family which was ancestral to the Capetian dynasty, and thus to the royal families of France and of many other countries (currently Spain and Luxembourg). The Capetians appear first in the records as powerful nobles serving under the Carolingian dynasty of Charlemagne in West Francia, which later became France. As their power increased, they came into conflict with the older royal family and attained the crown several times before the eventual start of the continuous rule of the descendants of Hugh Capet (ruled 987–996).

Hugh's paternal ancestral family, the Robertians, appear in documents that trace the family back to his great-grandfather Robert the Strong (d. 866). His origins remain unclear, but medieval records hint at an origin in East Francia, in present-day Germany, an area then still also ruled by the Carolingians. In particular, Regino of Prüm (died 915) states that Robert the Strong's son Odo was said to be a relative (nepos) of a Count Meingaud, count of an area near Worms, who died in 892, and there are indications that Maingaud's family used the names Robert and Odo.

Modern proposals about their ancestry further back are based on the idea that there was one family which frequently named its sons Robert, including Robert III of Worms (800–834), Robert the Strong (d. 866), and Robert I of France (866–923). For example, one proposed ancestor is Robert of Hesbaye (c. 800), about whom there are almost no records.

The Robertian family figured prominently amongst the Carolingian nobility and married into this royal family. Eventually, the Robertians themselves produced Frankish kings such as the brothers Odo (reigned 888–898) and Robert I (r. 922–923), then Hugh Capet (r. 987–996), who ruled from his seat in Paris as the first Capetian king of France.

Although Philip II Augustus (r. 1180–1223) was officially the last monarch of France with the title "King of the Franks" (rex Francorum) and the first to style himself "King of France" (roi de France), in (systematic application of) historiography, Hugh Capet holds this distinction. He founded the Capetians, the royal dynasty that ruled France until the revolution of the Second French Republic in 1848—save during the interregnum of the French Revolution and Napoleonic Wars. Members of the family still reign in Europe today : both King Felipe VI of Spain and Grand Duke Henri of Luxembourg descend from this family through the Bourbon cadet branch of the dynasty.