The nineteenth-century folklorist Elias Owen recorded a tale about a "Wicked Ghost" which haunted the rectory at Llandegla and was eventually exorcised by a man named Griffiths from Graianrhyd. The spirit was reputedly buried in a box under a large stone in the River Alyn close to Llandegla's bridge.

The Drovers Bank (Boncyn y Porthman in Welsh) is a spot located on the Mold Road between Llandegla and Rhydtalog. A violent ghost was once reputed to haunt that particular spot. It is said that in the eighteenth century, robbers murdered a drover there. Following the terrible crime, people reported seeing the ghost of the unfortunate man “hovering mist-like above the hedges near where he was killed”. Wagoner’s had difficulties with their horses in the area, which was put down to the presence of the ghost. It is even alleged that the ghost attacked a farmer late one night.

St. Tecla's Well is a spring in a field close to the church. The well was said to be a cure for epilepsy and sufferers of what were known as Clwyf Tecla, "St. Tecla's disease". The ritual was rather complex and a particularly strange custom - the sufferer washed themselves in the well after sunset and walked round it three times whilst carrying a cock in a basket, saying the Lord’s Prayer three times, leaving an offering of four-pence, and afterwards spending the night in the church. The church discouraged use of the well in the 19th century.