Question: The last descendant of the leader of the Anglo-Saxon settlement of Britain was never what?

Context articles: Cerdic of Wessex
Quoit brooch
Cellach mac Fíonachta
Brittonicisms in English
Herla
Edgar Ætheling
Groans of the Britons
Apocalypse of Zerubbabel
Jesse Cornplanter
Anglo-Saxon settlement of Britain

Cerdic (] ) is cited in the "Anglo-Saxon Chronicle" as a leader of the Anglo-Saxon settlement of Britain, being the founder and first king of Saxon Wessex, reigning from 519 to 534.
 Subsequent kings of Wessex all had some level of descent claimed in the Chronicle from Cerdic.
 (See House of Wessex family tree)
The quoit brooch is a type of brooch found from the 5th century and later during the Anglo-Saxon settlement of Britain that has given its name to the Quoit Brooch Style to embrace all types of Anglo-Saxon metalwork in the decorative style typical of the finest brooches.
 The brooches take their modern name from the rings thrown in the game of quoits, and have the form of a broad ring, or circle with an empty centre, usually in bronze or silver (sometimes inlaid with silver or gold respectively), and often highly decorated.
 The forms are in a very low relief, so contrasting with other early Anglo-Saxon styles, with detail added by shallow engraving or punching within the main shapes.
 Dots or dashes are often used to represent fur on the animal forms, as well as lines emphasizing parts of the body.
 They are fixed with a single, straight hinged pin like those of other Anglo-Saxon ring or Celtic brooches and are further defined by the presence of a slot and pin-stops on the ring.
Cellagh was a son of king Ailell mac Innreachtach of Uí Maine (died 791/799).
 He never became king himself, but his grandchildren and their descendants, the Uí Ceallaigh, monopolised the kingship.
 The first Ó Ceallaigh ruler was Aodh Ua Cellaigh, who was killed at the battle of Clontarf, fighting on the side of Brian Boru.
 His last descendant to rule the kingdom was Feardorcha Ó Cellaigh (died c. 1611).
 Ó Ceallaigh, O'Kelly and Kelly is one of the most populous surnames in County Galway.
Brittonicisms in English are the linguistic effects in English attributed to the historical influence of Brittonic speakers as they switched language to English following the Anglo-Saxon settlement of Britain and the establishment of Anglo-Saxon political dominance in Britain.
Herla or Herla King (Old English: "Herla Cyning" ) is a legendary leader of the mythical Germanic Wild Hunt and the name from which the Old French term "Herlequin" may have been derived.
 Herla often has been identified as Woden and in the writings of the twelfth-century writer Walter Map, he is portrayed as a legendary king of the Britons who became the leader of the Wild Hunt after a visit to the Otherworld, only to return some three hundred years later, after the Anglo-Saxon settlement of Britain.
Edgar Ætheling (also spelt Æþeling, Aetheling, Atheling or Etheling) or Edgar II (c. 1051 – c. 1126) was the last male member of the royal house of Cerdic of Wessex (see House of Wessex family tree).
 He was proclaimed, but never crowned, King of England in 1066.
The Groans of the Britons (Latin: "gemitus Britannorum" ) is the name of the final appeal made by the Britons to the Roman military for assistance against Pict and Scot raiders.
 The appeal is first referenced in Gildas' 6th-century "De Excidio et Conquestu Britanniae"; Gildas' account was later repeated in Bede's "Historia ecclesiastica gentis Anglorum".
 According to Gildas, the message was addressed to the general Flavius Aetius and requested his aid in defending formerly Roman Britain from the Picts and Scots.
 The collapsing Western Roman Empire had few military resources to spare during its decline, and the record is ambiguous on what the response to the appeal was, if any.
 According to Gildas and various later medieval sources, the failure of the Roman armies to secure Britain led the Britons to invite Anglo-Saxon mercenaries to the island, precipitating the Anglo-Saxon settlement of Britain.
Sefer Zerubavel also called the Book of Zerubbabel or the Apocalypse of Zerubbabel is a medieval Hebrew apocalypse written at the beginning of the 7th century in the style of biblical visions (e.g. Daniel, Ezekiel) placed into the mouth of Zerubbabel, the last descendant of the Davidic line to take a prominent part in Israel's history, who laid the foundation of the Second Temple in the 6th century BCE.
 The enigmatic postexilic biblical leader receives a revelatory vision outlining personalities and events associated with the restoration of Israel, the End of Days, and the establishment of the Third Temple.
Jesse J. Cornplanter (September 16, 1889 – 1957) (Seneca) was an artist and author.
 The last descendant of Cornplanter, an important 18th-century leader, his Seneca name was Hayonhwonhish.
 He illustrated several books about Seneca and Iroquois life.
 Jesse Cornplanter wrote and illustrated "Legends of the Longhouse" (1938), which records many Iroquois traditional stories.
The Anglo-Saxon settlement of Britain describes the process which changed the language and culture of most of what became England from Romano-British to Germanic.
 The Germanic-speakers in Britain, themselves of diverse origins, eventually developed a common cultural identity as Anglo-Saxons.
 This process occurred from the mid-fifth to early seventh centuries, following the end of Roman power in Britain around the year 410.
 The settlement was followed by the establishment of Anglo-Saxon kingdoms in the south and east of Britain, later followed by the rest of modern England.