''The Shepherd's Calendar'' is a famous literary work of -

The Shepheardes Calender, series of poems by Edmund Spenser, was published in 1579 and considered to mark the beginning of the English Renaissance in literature.
Edmund Spenser (1552-99):
He is called the poet of the poets because many later English poets followed his art of poetry.
Works:
-The Faerie Queene (1590)
-The Shepherd's Calendar (1579)
Source: An ABC of English Literature - Dr M Mofizar Rahman, britannica