The stone family huddle by their turf-roofed shelter, looking eastwards to the shrouded summit of Meall Daill, Perthshire, as the mists roll down from the burnt orange mountainside. The tallest of the figures, still under a foot in height, is a water-worn rock with a feminine torso and slim neck. She is the Cailleach: a seasonal deity in Gaelic mythology who bestrides the winter months, known variously as an earth-shaper, wise woman, storm-raiser and mistress of deer. Around her are ranged her husband, the Bodach, and their children.
There is no back history to this custom of putting this little stone family into their home before winter only a general custom that is adhered to through the last several generations. But it is as good a custom as any to say goodbye to the summer and welcome the cold days of winter and perhaps not linger on ghosties and ghouls plodding around one's home on All Saints and Souls day ;)
Also there is an essay here on some of the stories round these stones.
Article Source in the Guardian