The Old Church, Marown was visited by an Natural History & Antiquarian Society excursion in September 1912. The leader of the party, the Rev A.E. Clarke (vicar of Marown) 'pointed out the former extension at the East end, and gave an account of the excavations made there a few years ago, when, among other things, a fine cross-slab was brought to light, to judge from the carving it might be the work of the eighth century'. It measures 160 centimetres x 45.7 centimetres x 15.2 centimetres thick (Manx Cross No 50).