History of Scottish Gaelic
All surviving dialects are Highland and/or Hebridean dialects. Dialects of Lowland Gaelic have become defunct since the demise of Galwegian Gaelic, originally spoken in Galloway, which seems to have been the last Lowland dialect and which survived into the Modern Period. By the 18th century Lowland Gaelic had been largely replaced by Lowland Scots across much of Lowland Scotland. According to a reference in "The Carrick Covenanters " by James Crichton, the last place in the Lowlands where Scottish Gaelic was still spoken was the village of Barr in Carrick: only a few miles inland to the east of Girvan, but at one time very isolated. Crichton gives neither date nor details.
Comrie
The decline of Gaelic speakers in the area can be largely attributed to The Highland Clearances (Scottish Gaelic: "Fuadach nan Gàidheal") in the 18th and 19th centuries, which saw people in the smaller satellite settlements of the village (located in the surrounding mountains and glens) forcibly displaced from their homes, and many forced to emigrate to Canada, Australasia and North America. In addition, the Education (Scotland) Act of 1872 led to generations of Gaels forbidden from speaking their native language in the classroom, and punished for doing so. As with the rest of Scotland (excluding the North-west), Gaelic speakers have struggled to retain their language through the generations, though Comrie retains a larger than average number of speakers.