The traditional rulers of Mercia were known as the Iclingas, descendants of the kings of the Angles from Germania. Though some believe him to be a real historical figure and not mythical, the legendary God Wōden is said to be the patriarch of the Angle royal bloodline. When the Iclingas became extinct in the male line, a number of unknown families or Iclingas Branches, labelled B, C and W by historians, competed for the throne. Eventually the Kingdom of Mercia became a principality of the Kingdom of Wessex. Their monarchs appointed sub-rulers until it became amalgamated into the other Anglo-Saxon Kingdoms, and henceforth became known as the Kingdom of England, ruled by a Wessex monarch.

Kingdom of Mercia Monarchs
Reign: A.D
c. 527 (or c. 515) to ?
Son of Eomer, last King of the Angles in Angeln. Led his people across the North Sea to Britain; Great-grandson of Offa of Angel, who is traditionally considered as a legendary figure. Also traditionally, Icel is also considered a descendant of the Germanic god Wōden.
Son of Icel.
Son of Cnebba.
Creoda (Cryda or Crida)
c. 585 to c. 593
Son of Cynewald. Probably the founder of the Mercian royal fortress at Tamworth.
Pybba (Pibba, Wibba or Wybba)
c. 593 to c. 606
Son of Creoda. Extended Mercian control into the western Midlands.
Cearl (Ceorl)
c. 606 to c. 626
Named as king by Bede, not included in later regnal lists. Though Cearl ancestory is unknown, it is speculated that he is a kinsman of Pybba.
c. 626 to 655
Son of Pybba. Raised Mercia to dominant status amongst the Anglo-Saxon kingdoms. Last pagan ruler of Mercia. Killed in the battle of Winwaed by king Oswiu of Bernicia – One of two kingdoms that forms the kingdom of Northumbria.
Eowa (Eawa)
c. 626 to 642
Son of Pybba. Joint-ruler with his brother Penda, of which he is thought to have ruled Northern Mercia. Killed in the battle of Maserfield.
c. 653 to 656
Son of Penda. In c. 653 Peada was made king of the Middle Angles by his farther and after his farthers death was briefly king of Southern Mercia. Betrayed by his wife and murdered.
Oswiu of Bernicia
655 to 658
Briefly took direct control of Mercia after the death of Penda. Oswiu is now King of Northumbria (655 to 670).
Wulfhere (Wulfar)
658 to 675
Son of Penda. Restored Mercian dominance in England where he became the most powerful king in southern britain. Was also the first Christian king of all of Mercia.
Æthelred I
675 to 704
Son of Penda and brother of Wulfhere and Peada. Wife was murdered in unknown circumstances, but it is speculated she was murdered for the revenge of her sister murdering her husband king Peada. Abdicated and retired as a monk 7 years later to a monastery at Bardney.
Cœnred (Coenred or Cenred)
704 to 709
Son of Wulfhere. Was a religious and noble king. Abdicated and retired to Rome to become a monk.
709 to 716
Son of Æthelred I and cousin of Cœnred. Probably poisoned.
c. 716
Presumed son of Æthelred I (Ceolwald may not have existed).
Æthelbald (Ethelbald, or Aethelbald)
716 to 757
Grandson of Eowa. Was in exile during his cousins Ceolred reign, but return as ruler after Ceolred death. Offically Æthelbald wasn’t titled a Bretwalda in any of the chronicles, however, a charter in 736 title Æthelbald as “Rex Britanniae”, meaning “king of Britain”. Murdered by his bodyguards.
Beornred (Beornraed)
No known relation to his predecessors. Deposed by Offa.
757 to 796
Many historians regard Offa as the most powerful Anglo-Saxon king before Alfred the Great. He was the greatest and most powerful of all Mercian kings, he proclaimed himself King of the English in 774, built Offa’s Dyke, and introduced the silver penny. Offa was the great-great-grandson of Eowa.
787 to 796
Son of Offa. joint-ruler, died suddenly a few months after his father.
Cœnwulf (Cenwulf, Kenulf, or Kenwulph)
796 to 821
Seventh generation descendant of Pybba. Was the only Anglo-Saxon king to have Claimed the title of ’emperor’ before the 10th century. Coenwulf was also the last king of Mercia to exercise substantial dominance over other Anglo-Saxon kingdoms. Within a decade of his death, the rise of Wessex had begun under King Egbert, and Mercia never recovered its former position of power.
Cynehelm (Kenelm)
c. 798 to 812
Son of Cœnwulf. Although he existed, his status as joint-ruler and his murder are legendary. Canonised St Cynehelm (St Kenelm).
Ceolwulf I
821 to 823
Though the Kingdom of Mercia’s dominance began to decline, Ceolwulf was still king of the Kingdoms of Mercia, East Anglia and Kent. Was deposed by Beornwulf. Brother of Cœnwulf.
823 to 826
Beornwulf’s short reign saw the collapse of Mercia’s supremacy over the kingdoms of the Anglo-Saxon Heptarchy. Conjectured kinsman of Beornred. Killed in battle against the East Anglians.
826 to 827
No known relation to his predecessors. Was killed in battle a year later after his predecessor, Beornwulf, in a failed attempt to subjugate the East Anglians.
Wiglaf (1st reign)
827 to 829
No known relation to his predecessors. Deposed by Ecgberht of Wessex.
Cerdicing (House of Wessex)
Ecgberht (Ecgberht, Ecgbert, or Ecgbrih)
829 to 830
Briefly took direct control of Mercia after the deposition of Wiglaf. Also King of Wessex (802–839).
Wiglaf (2nd reign)
830 to 839
Restored. Although Mercia regained its independence, its dominance in England was lost.
c. 839 to c. 840
Son of Wiglaf and son-in-law of Ceolwulf I. Probably joint-ruler.
c. 840
Son of Wigmund. Declined the kingship and was later murdered by Beorhtwulf. Canonised (St Wystan).
Ælfflæd (Queen)
c. 840
Daughter of Ceolwulf I, wife of Wigmund and mother of Wigstan. Appointed regent by Wigstan. Deposed by Beorhtwulf.
Beorhtwulf (Berhtwulf)
840 to 852
Claimed to be a cousin of Wigstan. Usurped the kingship and forced Ælfflæd to marry his son, Beorhtfrith.
Burgred (Burhred or Burghred)
852 to 874
Conjectured kinsman of Beorhtwulf. Married Æthelswith, daughter of king Æthelwulf of Wessex. Fled to Rome after the invasion of the Great Heathen Army drove Burgred from his kingdom.
Ceolwulf II
874 to 879 or c. 883
Possibly a descendant of the C-dynasty, of which Ceolwulf I was a member, perhaps via intermarriage with W-dynasty. Lost eastern Mercia to the Danes in 877 and was the last king of an independent Mercia.
Ealdorman of unknown ancestry
Æthelred II (Lord or Ealdorman of the Mercians)
c. 881 to 911
Recognised Alfred of Wessex as his overlord and married his daughter Æthelflæd. Regarded as an ‘ealdorman’ by West Saxon sources. Æthelred rule was confined to the western half, as eastern Mercia was then part of the Viking-ruled Danelaw.
Cerdicing (House of Wessex)
Æthelflæd (Lady)
911 to 918
Wife of Æthelred and eldest daughter of Alfred of Wessex. Possibly descended from earlier Mercian kings via her mother. With her brother, Edward the Elder, reconquered eastern Mercia.
Cerdicing (House of Wessex) – on her mother side
Ælfwynn (Lady)
Daughter of Æthelred II and Æthelflæd. Deposed by her uncle, Edward the Elder, Dec 918, who annexed Mercia to Wessex.