<P> Gill may be a surname or given name, derived from a number of unrelated sources; </P> <Ul> <Li> in English, Gill may be a hypocorism of a number of given names, including Giles, Julian, William (Guillaume), Gillian, etc . </Li> <Li> the Dutch form of the given namen Giles </Li> <Li> in Northern English, Scots and Norwegian, it may be a topographic name, ultimately derived from Old Norse gil "ravine"; c.f. Lord Gill </Li> <Li> as a surname, an anglicization of the Scottish or Irish patronymic McGill (or Mac Gille, Mac An Ghoill and variants) </Li> <Li> in Hebrew, a masculine given name or byname meaning "joy, gladness" (feminine form Gilla) </Li> <Li> in Punjabi, a common last name in Punjab . </Li> </Ul> <Li> in English, Gill may be a hypocorism of a number of given names, including Giles, Julian, William (Guillaume), Gillian, etc . </Li>

Where does the last name gill come from