Daughter of their great-grandparent’s half-sibling with the other great-grandparent’s full sibling.
My sesqui-first great-cousin-aunt is a good person.
by Hgcloziw November 23, 2019
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Great-Niece

My mother is not a grandma, but her sister and brother are which means she has a few great-nieces.

My non-biological paternal grandfather has a super beautiful great-niece who is the granddaughter of his youngest brother.
by Excrushman October 22, 2022
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great-niece

My great-niece is a good person.
by Mr. Jacov November 23, 2019
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great-niece

great-niece.
by Zabombini October 05, 2024
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great-great-grandaunt-in-law

My great-great-grandaunt-in-law is a good person.
by JAMP12 September 21, 2021
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