Manson is a surname of Scottish origin. It is an Anglicised version of the Scandinavian name Magnusson, meaning son of Magnus, and a Sept of Clan Gunn. It is particularly common in the far northeast of Scotland in the county of Caithness and in Orkney and Shetland. It is also relatively common in southwest Scotland, in the country of Ayrshire. Notable people with the surname include: Alan Manson (1919–2002), American actor. Amy Manson (born 1985), Scottish actor. Andra Manson (born 1984), American high jumper. Andy Manson, British luthier and custom guitar-maker.
https://en.wikipedia.org/wiki/Manson