There was a revival in Louth for six months through Elizabeth Allen somewhere between 1825 and 1850. I am guessing that it was in 1834 as it is likely that the chapel was rebuilt as a result of a revival. Also, there was a Primitive Methodist revival 1835-8, which was probably the same move of God.
The first Methodist Chapel was in Eastgate in 1769. It was moved to the current site in 1808 and was rebuilt in 1835.