and built by David Jones of Penarth for a cost of £2,600. A Celtic stone cross dating back to the 10th or 11th century still stands in the churchyard today. The stone includes an inscription IRBICI, which means “[the stone] of Irbic”, but nothing is known of this person or exactly why the cross was erected. The cross has been mutilated at the top but otherwise is complete. The monument is made of Sutton stone and measures 9 foot 9 inches by 2 foot 3 inches. Renovation work was carried out on the cross in July 2013. A replica can be seen at the National Museum of Wales. To the west of the church are three fragmentary components of a well-fortified house dating from the 1420s or 1430s, believed to have been built by John de Van. Great House Farm Great House Farm previously stood alongside St Dochdwy's church, and was the site of a Celtic monastery and a missionary centre. The remains of a soldier and his horse were found under the floor of the dining room when work to replace the stone floor with timber was undertaken. It is believed that there may have been a battle on the site and the soldier was buried where he lay in his armour. His remains were re-buried in St Dochdwy's churchyard and his visor and lance are now in the National Museum of Wales. A petition for the preservation of the farm was signed by 1,700 in 1974. The farm was opened on occasions for locals, schoolchildren, and visitors to learn about how people lived in the past, how they made dried pork, cheese, butter, beer, and sent sheep's wool to the woollen mill on Leckwith Hill for spinning into yarn. A cheese drying room was hollowed out of a solid wall. There was also a bedroom where travelling monks from earlier centuries would have taken their rest. Guglielmo Marconi slept here in a four poster bed whilst working on his wireless telegraphy experiments between Lavernock Point and Flat Holm. The farm was the home of Mr John Williams' family several generations. It was demolished on the 6th of December 1988 by British Petroleum Pension Funds following a 33-year dispute over ownership. The site is now mostly vacant and overgrown, awaiting housing development. Housing was built on what was once the fields of Great House Farm in the 1960s, as