William Shakespeare might refer to at least 2 people:

1) William Shakespeare (baptised April 26, 1564 – died April 23, 1616) was an English poet and playwright widely regarded as the greatest writer of the English language, and the world's preeminent dramatist. He wrote approximately 38 plays and 154 sonnets, as well as a variety of other poems. Already a popular writer in his own lifetime, Shakespeare became increasingly celebrated after his death and his work adulated by numerous prominent cultural figures through the centuries.[4] He is often considered to be England's national poet[5] and is sometimes referred to as the "Bard of Avon" (or simply "The Bard") or the "Swan of Avon".

Orthodox scholars believe Shakespeare produced most of his work between 1586 and 1612, although the exact dates and chronology of the plays attributed to him are under considerable debate, as is the authorship of the works attributed to him. He is counted among the very few playwrights who have excelled in both tragedy and comedy, and his plays combine popular appeal with complex characterisation, poetic grandeur and philosophical depth.

2) William Shakespeare (November 19, 1948 - October 5, 2010) was the stage name of Australian singer John Stanley Cave, who also went by the names John Cabe and Billy Shake. He is best known for his singles “Can’t Stop Myself From Loving You” (1974) and “My Little Angel” (1975). He was active from 1966-1993, primarily making glam pop music.