Born ‎± 826 at Wessex, England, died ‎ 860 at (dsp)‎, approximately 34 years

Aethelbald (d. 860), king of Wessex (from 855/856), the son of Aethelwulf, with whom he led the West Saxons to victory against the Danes at Aclea (851). He reportedly rebelled against his father either before (855) or on the latter's return from Rome in 856 and deprived him of Wessex, which he ruled until his death. On his father's death in 858 he married his stepmother, Judith. [Encyclopaedia Britannica]

Born ‎± 828 at Wessex, England, died ‎between 865 and 866 at (dsp)‎, 37 or 38 years

Aethelberht (d. 856/866), king of the West Saxons, or Wessex, who succeeded to the sub-kingdom of Kent during the lifetime of his father Aethelwulf and retained it until the death of his elder brother Aethelbald in 860, when he became sole king of Wessex and Kent, the younger brothers Aethelred and Alfred renouncing their claim. He ruled these kingdoms for five years. His reign was marked by two serious attacks from the Danes, who destroyed Winchester in 860, in spite of the resistance of the ealdormen Osric and Aethelwulf. In 865 the danes ravaged Kent. [Encyclopaedia Britannica]

Born ‎± 830 at Wessex, England, died ‎ Apr 23, 871 at Merton, Torrington, Devonshire, England‎, approximately 41 years, buried ‎ at Wimborne, Dorsetshire, England

Aethelred I (d. April 871), king of Wessex and of Kent (865/866-871), son of Aethelwulf of Wessex.

By his father's will he should have succeeded to Wessex on the death of his eldest brother Aethelbald (d. 860). He seems, however to have stood aside in favour of his brother Aethelberht, king of Kent, to whose joint kingdoms he succeeded in 1865 or 866. Aethelred's reign was one long struggle against the Danes. In the year of his succession a large Danish force landed in East Anglia, and in the year 868 Aethelred and his brother Alfred went to help Burgred of Mercia against this host, but the Mercians soon made peace with their foes. In 871 the Danes encamped at Reading, where they defeated Aethelred and his brother, but later in the year the English won a great victory at a place called "Aescesdun." Two weeks later they were defeated at Basing but partially retrieved their fortune by a victory at "Maeretun" (perhaps Marden in Wiltshire), though the Danes held the field. In the Easter of this year Aethelred died, perhaps of wounds received in the wars against the Danes, and was buried at Wimborne. [Encyclopaedia Britannica]

Born ‎ 849 at Wantage, Berkshire, England, died ‎ Oct 26, 899 at Winchester, Hampshire, England‎, 49 or 50 years, buried ‎ at Winchester Cathedral, Winchester, England

Alfred ruled after his 3 older brothers died in battle.

Alfred is the only English king to bear the title "The Great." He fought the Danes, with whom he divided up England, eventually taking Mercia and Northumberland from them, along with Wessex, Kent, and London, he had almost all of England at the end. He encouraged the production of copies of "The Anglo Saxon Chronicles."

Alfred was one of the greatest men in history. He was crowned king at Winchester 871; founded the British Navy, organized the militia, compiled a code of laws, built schools and monasteries, and invited scholars to live at his court. He was a good scholar and translated many books.

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Following copied from Barry Hummel, Jr, World Connect db=siderhummel, rootsweb.com:
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From the late 8th century, attacks by Vikings from Scandinavia increased. After a major invasion in 865, the kingdoms of Northumbria and Mercia were rapidly overrun, and in 871 the Danish army attacked Wessex. The Wessex forces under the command of Alfred (reigned 871-99), then aged 21, defeated the Danes at the Battle of Edington in 878. The Danes withdrew to an area north of a frontier running from London to Chester and known as 'Danelaw'.

This victory did not finish the Danish threat, and Alfred reorganised the Wessex defences by organising his army on a rota basis, so he could raise a 'rapid reaction force' to deal with raiders whilst still enabling his thegns and peasants to tend their farms. Second, Alfred started a building programme of well-defended settlements across southern England as a defence in depth against Danish raiders. Alfred also ordered the building of a navy of new fast ships to patrol the coasts and meet invaders before they penetrated inland.

Other reforms included establishing a legal code (assembled from the laws of his predecessors and of the kingdoms of Mercia and Kent), and reforming the coinage. Illiterate in Latin until the age of 38, Alfred promoted literacy, religion and education, and directed the translation of works of religious instruction, philosophy and history into the vernacular; this was partly so that people could read his orders and legislation. The energetic royal authority demonstrated in Alfred's policies presaged the Wessex kings' rule of all England during the next century.