Mack
[mæk]Meaning
short form of an Irish or Scottish surname beginning with Mac or Mc, from Irish mac 'son'
Background Story
Mack is also a medieval short form of Magnus, brought to Britain by Scandinavian settlers. As a surname it is common among the German-Russian community, and a Gaelic derivation gives the meaning 'son'. The name is used in Irish, Danish, Finnish, German, Icelandic, Norwegian and Swedish, and in Medieval Scandinavian use. In English it is also a generic slang term for a man.
Temperament

Related Names
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From Irish donn, meaning 'noble' or 'prince'; also 'the dark one' in Irish mythology.
Egan
A form of the Irish name 'Eoghan', which means 'born of the yew tree'.
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From the Old Norse Eiríkr, "ever ruler" or "sole ruler"
Erik
Scandinavian form of Eric, from Old Norse Eiríkr, usually taken to mean "sole ruler" or "eternal ruler".
Gael
Probably from the ethnolinguistic term Gael, a speaker of a Gaelic language
Gunn
Modern form of Gunnr, an Old Norse name