Golf's Ko, youngest golfer to be ranked 1 (5)

I believe the answer is:

lydia

(Other definitions for lydia that I've seen before include "'Love for --' (H.E. Bates)" , "Woman" , "Girl's name - ancient kingdom in Asia Minor" , "Female" , "Daily it's a girl's name" .)

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

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