Complex sentence: A less well know activity was that of "Farmers Night" was instigated very early on and still continues today, its function was to foster good relations, not only with the farmers but of people who lived in Capel Curig.
Split into simpler sentences: A less well known activity was that of "Farmers Night" which was instigated very early on and still continues today. Its function was to foster good relations, not only with the farmers but with people who lived in Capel Curig.