Revival of Romanticism began in-

The Romantic Period (1798-1832):
The age began in 1798 with the first edition of Wordsworth's Lyrical Ballads and ended with the first Reformation Act in 1832. However, it is worth noting that the signs of Romantic literature came into view around 1785 when William Blake started writing his Songs of Innocence.
This period is also called the Revival of Romanticism because the romantic ideals of the Elizabethan Period revived during these years.
Source: An ABC of English Literature - Dr M Mofizar Rahman