1. The spouse of one's grandparent's sibling.
2. The sibling of one's grandparent-in-law.
My great-pibling-in-law is a good person.
by Elivaldeq November 24, 2019
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Child of their great-grandparent’s full sibling with the other great-grandparent’s full sibling.
My double-great-cousin-pibling is a good person.
by Hgcloziw November 23, 2019
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