How many syllables are in the name Coleridge - two or three?
I.e. is it [koʊləɹɪdʒ] or [koʊlɹɪdʒ]?
From Coleridge himself, we have
so either put the schwa in, or leave it out, depending on which way fits the meter.
It appears there are several schools: cōl-ridge, cō-lĕ-ridge, and cŏ-lĕ-ridge. It seems his name was pronounced cōl-ridge in his own time; there is no schwa after the r, and it has only two syllables: "coal-ridge" (in IPA: /'kəʊlɹɪdʒ/ or /'koʊlɹɪdʒ/).
The Big Book of Beastly Mispronunciations: The Complete Opinionated Guide for the Careful Speaker by Ch. H. Elster (2006) explains that his name is often mispronounced: