First cousin's great-grandchild.
by Hgcloziw November 23, 2019

My double-first cousin-nibling is a good person.
by Hgcloziw November 23, 2019

Child of their maternal first cousin’s child with the paternal first cousin’s child or double-first cousin’s grandchild.
My double-first great-cousin-nibling is a good person.
by Hgcloziw November 23, 2019

The grandchild-in-law of one's parent-in-law's sibling.
by Elivaldeq November 24, 2019
