Edmund Shakespeare was born on the third of May, 1580.
The only Edmund shakespeare I know of was the younger brother of William Shakespeare. He was born in 1580 and went to London to work in the theatre like his older brother where he was killed.
He was fifteen when his brother Edmund was born. (Edmund was born in March 1580 and William in April 1564)
Edmund Sharpe died on 1877-05-08.
No, his only son was called Hamnet. He did have a brother called Edmund.
Yes, he had three: Richard, Edmund and Gilbert. All three lived to adulthood, but died before their older brother. Edmund (the youngest) actually followed William into the theatre world. (see related question)
Edmund I was born in 921.
Edmund Spenser
The Faerie Queen by Edmund Spenser from the time of Shakespeare may be the poem you are thinking of.
Edmund was born on May 17, 1443.
Edmund Leighton was born in 1853.
Edmund Barrow was born in 1852.