About the Robertson surname
The surname Robertson is associated with a patronymic formation. The -son ending traditionally indicates descent, with the sense “son of.”. The name therefore belongs to a tradition in which an ancestor's given name gradually became a hereditary surname. Different families could independently adopt a surname formed from the same given name.
Pronunciation:
Ro-bèrt-son/ʁɔbɛʁtsɔ̃/