The Cromarty dialect of North Northern Scots was spoken in Cromarty, Scotland. The dialect originated from people who moved north from the Firth of Forth in the 15th and 16th centuries. The last native speaker of the dialect, Bobby Hogg, died in 2012 at age 92."Cromarty fisherfolk dialect's last native speaker dies"
BBC News, 2 October 2012. The dialect had a heavy influence from both Highland English and Scottish Gaelic. The dialect was recorded so that if it was to die out it could still be read and studied.

References

Scots dialects Black Isle Languages attested from the 15th century Languages extinct in the 2010s Extinct languages of Scotland 2012 disestablishments in Scotland {{scotland-stub