Recent research has suggested that the family name Weir has been around for nearly 800 years. Weir was originally from British origins. Records dating back to 1108 suggest there was a contingency of Weir's in the county of Surrey.
Throughout the world there are approximately 74077 people with this surname. Hampshire currently holds the highest density of people with the surname Weir. A late 19th century Weir was noted as liking a drink after police allegedly escorted him out of no less than four taverns in one evening.