Gavin Rowatt was the eldest son of Thomas Rowatt, the Reformed Presbyterian minister at Penpont. He was born in the manse in 1802. He studied at Glasgow University and graduated, in 1821, with an M.A. Afterward, he pursued theological studies at the Theological Hall, at Paisley, from 1821 through 1824. On April 27, 1825, Rowatt was licensed by the Southern Presbytery and, the following spring, he received four calls. In 1826, he informed the Synod that he preferred the call to Whithorn and was ordained on September 13, 1826 with his father prominent in his ordination. His only published work was a sermon at the ordination of James M’Gill, in 1829. He died quite unexpectedly, on November 2, 1832.