When was King Lear originally performed and published?

The first known performance of King Lear was on St. Stephen's Day (26 December) in 1606. It was first published in 1608, and also appears in the First Folio of 1623, a collection of 36 of Shakespeare's plays entitled Mr. William Shakespeare's Comedies, Histories, & Tragedies, edited by Shakespeare's colleagues John Heminges and Henry Condell.