The Franks, Germanic-speaking peoples that invaded the Western Roman Empire in the 5th century, were first led by individuals called dukes and reguli. The earliest group of Franks that rose to prominence was the Salian Merovingians, who conquered most of Roman Gaul, as well as the Gaulish territory of the Visigothic Kingdom, in 507 AD.
The sons of Clovis I, the first King of the Franks, conquered the Burgundian and the Alamanni Kingdoms. They acquired Provence, and went on to make the peoples of the Bavarii and Thuringii their clients. The Merovingians were later replaced by the new Carolingian dynasty in the 8th century. By the late 10th century, the Carolingians themselves had been replaced throughout much of their realm by other dynasties.
A timeline of Frankish rulers has been difficult to trace since the realm, according to old Germanic practice, was frequently divided among the sons of a king upon the king's death. However, territories were eventually reunited through marriage, treaty or conquest. There were often multiple Frankish kings who ruled different territories, and divisions of the territories were not very consistent over time.
As inheritance traditions changed over time, the divisions of Francia (the lands of the Franks) started to become kingdoms that were more permanent. West Francia formed the heart of what was to become the Kingdom of France; East Francia evolved into the Kingdom of Germany; and Middle Francia became the Kingdom of Lotharingia in the north, the Kingdom of Italy in the south, and the Kingdom of Provence in the west. West and East Francia soon divided up the area of Middle Francia.
The idea of a "King of the Franks" (Rex Francorum) gradually disappeared. The title "King of the Franks" is attested in the Kingdom of France until 1190, that of "Queen of the Franks" (for queen consorts) until 1227. That represented a shift in thinking about the monarchy from that of a popular monarchy, the leader of a people, sometimes without a defined territory to rule, to that of a monarchy tied to a specific territory.
Early Frankish rulers
Genobaud (3rd century?) Merogais & Ascaric (4th century) Marcomer (4th century), dux Sunno (4th century), dux Genobaud (4th century), dux Mallobaudes (4th century) Theodemer (5th century) Ragnachar (died 509), killed by Clovis Chararic (died 509), killed by Clovis
Salian Franks (Merovingians)
Chlodio (5th century) Merovech ( 450–457), perhaps a son of Chlodio Childeric I ( 457–481), son of Merovech Clovis I ( 481–511), united all Franks by 507
Ripuarian Franks
Childebert (5th century) Sigobert the Lame (died 509), killed at the instigation of Clovis Chlodoric the Parricide (died 509), son of Sigobert, killed by Clovis
Merovingian dynasty
Early Kings of the Franks (c. 507-613) Clovis I united all the Frankish petty kingdoms as well as most of Roman Gaul under his rule, conquering the Domain of Soissons of the Roman general Syagrius as well as the Visigothic Kingdom of Toulouse (Aquitaine). He took his seat at Paris, which along with Soissons, Reims, Metz, and Orléans became the chief residences. Upon his death, his four sons - and later his grandsons - split the kingdom among them. Every son received a part of the original Frankish territory and also a part of the newly acquired Aquitaine.
Kings in Neustria and Burgundy (613–679)
Chlothar II defeated Brunhilda and her great-grandson, Sigibert II, reunifying the kingdom. By that time the realms of Neustria, Burgundy and Austrasia had developed regional identities. In order to appease the local nobility, Austrasia was usually ruled by separate king, often a son or brother of the king ruling in Neustria and Burgundy. A similar arrangement for Aquitaine was short-lived.
Kings in Austrasia (623–679)
Chlothar II had reunified the kingdom in 613. By that time the realms of Neustria, Burgundy and Austrasia had developed regional identities. In order to appease the local nobility, Clothar made his young son, Dagobert I, king of Austrasia. Austrasia was usually ruled by a separate king, often a son or brother of the king ruling in Neustria and Burgundy, for the following decades.
Later Kings of the Franks (679–751)
Theuderic III was recognized as king of all the Franks in 679. From then on, the kingdom of the Franks can be treated as a unit again for all but a very brief period of civil war. This is the period of the roi fainéant, "do-nothing kings" who were increasingly overshadowed by their mayors of the palace.