NJ7249 : St Congan's Kirkhttp://canmore.rcahms.gov.uk/en/site/19148/details/turriff+saint+conga n+s+church/ could contain the answer to AB's query, although the church may always have been a long narrow one from the time of its foundation.
Further information given in Visit Scotland 2014-15 states 'The present building has a carved belfry with a bell dated 1557. The east sandstone wall features a carving with 10 heads. In recent times work has been carried out to repair the walls.'