Real head of the family in Giles cartoons (7)

I believe the answer is:

grandma

(Other definitions for grandma that I've seen before include "St Winifred's School Choir sang about her" , "Elderly relative" , "Nanny" , "Darn, Mag is older relation" , "Senior lady in family?" .)

I've seen this clue in The Times and The Sunday Times.

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