English
Thomson
From Tom + -son, originally meaning "son of Thomas".
Formed from Tom + -son
The story
In some instances of people so named, a calque of Scottish Gaelic MacTamhais (‘MacTavish’). Many with the name MacTavish changed their name to Thomson and Thompson after Culloden. Being derived from Thomas ultimately gives this surname an Aramaic derivation - teoma 'twin'.
Today it means
name A British surname transferred from the given name.
Language periods are conventional ranges, not dates for this word.
Etymograph / Thomson