When James Mackay was born on 11 November 1838, in Melrose, Roxburghshire, Scotland, his father, Angus MacKay, was 41 and his mother, Euphemia Rodger, was 25. He married Rosa Elizabeth Clark on 2 January 1876. They were the parents of at least 11 sons and 4 daughters. He lived in Melrose, Roxburghshire, Scotland, United Kingdom for about 10 years. He died on 30 October 1907, in Birchington-on-Sea, Kent, England, United Kingdom, at the age of 68, and was buried in Birchington-on-Sea, Kent, England, United Kingdom.
Scottish: variant of McKay .