The Wesleyan Methodists sent a mission to Shetland in 1822, encouraged by Rev Adam Clarke. He was instrumental in collecting the money which paid for the first chapel in Lerwick, so when the chapel was rebuilt in the 1860s, with a manse, it was as a memorial to Dr Clarke. It was opened to mark the Jubilee of Shetland Methodism in 1872.
The buildings were designed by William Parslow, who took into account “the necessities of the stormy winter seasons”. The chapel was heated by means of a hot air apparatus.
The drawing was published in The Seventeenth annual report of the Wesleyan Chapel Committee, 1871 (page 135).
The records of Shetland Methodism were deposited in the Shetland Museum and Archives in 2013. Follow this link to discover more. https://www.shetlandmuseumandarchives.org.uk/site/assets/files/1702/unkans_no18.pdf
The full catalogue may be found at http://www.calmview.eu/ShetlandArchive/CalmView/