St Trinian's Church is the roofless ruin of a small chapel at the foot of Greeba Mountain, adjacent to the main A1 Douglas - Peel Road in the parish of Marown, Isle of Man.

[7] The barony lands were given by King Olaf II of Man in or about the year 1230,[8] and successive charters or confirmations refer to the church of St Ninian and the hospitals at Ballacgniba and Balhamer.

[10] Despite more fanciful folk tales to the contrary, the most probable reason why the church remained unfinished is that it was being built some time in the early 14th century, while the island was under the rule of the Scots.

A renowned Manx folk tale tells of the big Buggane, a supernatural being which lived on Greeba Mountain, and strongly objected to the church roof being completed.

[3] On the last occasion of the roof being almost finished, legend says that a young tailor named Timothy Clucas[11] wagered he would sit in the church all night and make a pair of breeches in order to exorcise the troublesome ogre.

Before the Buggane's taunts were finished, Timothy completed the breeches, and jumped out of the church just as the roof crashed in, dropping his needle and scissors as he made good his escape.

He got into Bishop Wilson's bad books when one night he masqueraded on the ruins of St Trinian's to scare the country people and to show them how wrong they were in believing in the mythical story of the Buggane.