A Scottish and Northern Irish patronymic surname, from given names derived from the given name James.
"Jameson is a common family name in Scotland that originated as a nickname for someone who was known by the given name James."
The name Jameson is a patronymic formed by combining the given name James with the suffix -son to mean "son of James." It entered English usage as a surname following the common pattern of adding "-son" to a father's first name.