Irregular marriages from 19th-century Dublin

John Grenham's Irish Roots column brings news of a new publication of the marriage register of the Rev John G. F. Shultz, minister of the German Lutheran church in Poolbeg Street in Dublin from about 1806 until his death in 1839. Irregular Marriages in Dublin Before 1837 is published by Dundalk, Dún Dealgan Press.
It appears these are also included in the more than 70,000 records of the Early Irish Marriages Index at http://www.irishancestors.ie/?page_id=1926