Kalfatjorn is a former farm, parsonage and church site in the Vatnsleysa County.  It was a parsonage until 1907, when the parish was united with the Gardar parish of the Kjalarnes deanery.  During catholic times, the church was dedicated to St Peter.  The present church was built in 1892-93 and consecrated June 11th 1893.  It was built of wood and covered with corrugated iron on stone foundations.  It seats 150 persons.  It now belongs to the Tjorn Parish.  The altarpiece, a replica of the one in the Reykjavik Cathedral, painted by Sigurdur Guðmundsson, is equally old as the church.