One of the "grandchildren on your knee" in the Beatles' "When I'm Sixty-Four" (4)

I believe the answer is:

vera

(Other definitions for vera that I've seen before include "Duckworth, Lynn" , "& 16 'The Forces' Sweetheart'" , "senior songstress?" , "and 15: Singing Dame" , "Dame -- Lynn, singer" .)

I've seen this clue in The New York Times.

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