Kathryn is not biblical but Greek in origin meaning pure. See related link below:
kathryn is a celtic/galic name kathryn,karen,katrina ect; all mean pure
Kathryn comes from the language Gaelic, it means pure and special.
Kathryn Grayson's birth name is Zelma Kathryn Elisabeth Hedrick.
Kathryn Trapani's birth name is Kathryn Webster.
Kathryn Murray's birth name is Kohnfelder, Kathryn.
Kathryn Joosten's birth name is Kathryn Rausch.
Kathryn Hunter's birth name is Kathryn Hadjipateras.
Kathryn Graf's birth name is Kathryn MacDonald.
Kathryn Fuller's birth name is Kathryn Eagon.
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Kathryn Bigelow's birth name is Kathryn Ann Bigelow.
Kathryn Reece's birth name is Kathryn Elizabeth Reece.