Got lineages from him? (11)

I believe the answer is:

genealogist

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'him?' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.

'got lineages' is the wordplay.
'got lineages' anagrams to 'GENEALOGIST'.
But, I am not clear how this is indicated.

'from' acts as a link.

Can you help me to learn more?

(Other definitions for genealogist that I've seen before include "Student of descent" , "Ancestor tracer" , "who may explore a particular line" .)

I've seen this clue in The Globe and Mail.

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