Killin ( Cill Fhinn ` the White ( or Fair ) Church ' in Gaelic ) is a village with about 640 inhabitants situated at the western head of Loch Tay in Stirling ( formerly Perthshire ) , Scotland . Killin ( Cill Fhinn ` the White ( or Fair ) Church ' in Gaelic ) is a village situated at the western head of Loch Tay in Stirling ( formerly Perthshire ) , Scotland .