Child of their maternal first cousin’s child with the paternal first cousin’s child or double-first cousin’s grandchild.
My double-great-cousin-nibling is a good person.
1. The grandchild of one's parent's stepsibling.
2. The stepgrandchild of one's parent's sibling.
3. The grandchild of one's stepparent's sibling.
My step-cousin-nibling is a good person.
1. The grandchild of one's stepsibling.
2. The stepgrandchild of one's sibling.
My step-great-nibling is a good person.
My third great-cousin-nibling is a good person.