Samuel Taylor Coleridge (1772-1834) was an English poet, critic, and philosopher who was, along with his friend William Wordsworth, one of the founders of the Romantic Movement in England and one of the Lake Poets. He is probably best known for his poems The Rime of the Ancient Mariner and Kubla Khan, as well as his major prose work Biographia Literaria.
Great as an insight into Coleridge's way of thinking about the plays and as an artefact of the time but generally useless for any further understanding of Shakespeare. Some insights were clever and could inspire further analysis by the reader but most were cut short and he jumps from point to point without finishing his idea fully.