Complex sentence: In October 1926 he left Killead, and ministered in the Church of St. Michael's, Edinburgh, in 1928 he moved to St. Thomas' Leith, returning to Ireland in 1935.
Split into simpler sentences: In October 1926 Irwin left Killead, and ministered in the Church of St. Michael's, Edinburgh. In 1928 he moved to St. Thomas' Leith, returning to Ireland in 1935.