Which period is called 'the Golden age of English literature'?

The Elizabethan Period is called 'the Golden age of English literature'.
Duration of Elizabethan Period is 1558 to 1603. The other titles of this age: Glorious Period of English literature, Golden Period of English Drama, A nest of singing birds.
Source: An ABC of English Literature, Dr. M Mofizar Rahman and Website Lecture.