Definition of "maternal grandfather" []

• The father of one's mother. (noun)

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• "His maternal grandfather was the late G.W. Parke Custis, of Arlington, the stepson of Gen. W.shington, and familiarly called in his day the child of Mount Vernon."
• "There was something, too, in my maternal grandfather that probably foreshadowed the nature-lover and nature-writer."
• "Our maternal grandfather was Rev. Richard Bryan, a Methodist preacher."