what are its sources?
The second edition of "The Chronicles of England, Scotlande, and Irelande" by Raphael Holinshed
King Lear
Shakespeare's play is based on various accounts of the semi-legendary Brythonic figure Leir of Britain, whose name has been linked by some scholars to the Brythonic god Lir/Llŷr, though in actuality the names are not etymologically related. Shakespeare's most important source is probably the second edition of "The Chronicles of England, Scotlande, and Irelande" by Raphael Holinshed, published in 1587. 
what family is rosaline from in romeo and juliet Capulet family who is this character mentioned above? A fictional character mentioned in "Romeo and Juliet" who is the writer of this story? William Shakespeare what is the story about? It is about two young star-crossed lovers whose deaths ultimately reconcile their feuding families. any other writings of the above mentioned writer? "Hamlet", "Othello", "King Lear", and "Macbeth" when did he born? His date of birth is unknown, but is traditionally observed on 23 April, 1564 what is the third writing about from the above list? It tells the tale of a king who bequeaths his power and land to two of his three daughters, after they declare their love for him in a fawning and obsequious manner. His third daughter gets nothing, because she will not flatter him as her sisters. When  feels he has been treated with disrespect by the two daughters, becomes tenderly reconciled to his third daughter, just before tragedy strikes her and then the king.
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King Lear [SEP] Sources
Shakespeare's play is based on various accounts of the semi-legendary Brythonic figure Leir of Britain, whose name has been linked by some scholars to the Brythonic god Lir/Llŷr, though in actuality the names are not etymologically related. Shakespeare's most important source is probably the second edition of "The Chronicles of England, Scotlande, and Irelande" by Raphael Holinshed, published in 1587. Holinshed himself found the story in the earlier "Historia Regum Britanniae" by Geoffrey of Monmouth, which was written in the 12th century. Edmund Spenser's "The Faerie Queene", published 1590, also contains a character named Cordelia, who also dies from hanging, as in "King Lear".