Great-grandparent's parent.
My great-great-grandparent is a good person.
by Mr. Jacov November 23, 2019
My step-great-grandparent is a good person.
by Elivaldeq November 24, 2019
The great-grandparent of one's spouse.
My great-grandparent-in-law is a good person.
by Rwopazaq November 24, 2019
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My step-great-great-grandparent is a good person.
by User655 July 25, 2021
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