Definition of "great-grandson" []

• Son of a grandchild (noun)

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• "In 1809 William Penn, the great-grandson of the founder of Pennsylvania, married a woman known in Philadelphia as “a common Prostitute of this city” and did not lose his standing among the local elite."
• "Once when we were crossing into Texas a new border agent, young enough to be my great-grandson, snapped at me when I said my usual "I'm a US citizen"."
• "A great-grandson of Sir Winston Churchill, Jonathan Sandys, entered the fray Thursday, issuing a statement that called on Congress to allow the use of the rotunda."