The spouse of one's grandparent-in-law's sibling.
My co-great-pibling-in-law is a good person.
Great-great-grandparent's half-sibling.
My half-great-great-great-pibling is a good person.
Child of their great-grandparent’s half-sibling with the other great-grandparent’s full sibling.
My sesqui-first great-cousin-pibling is a good person.
Great-great-grandparent's first cousin.
My great-great-great-cousin-pibling is a good person.
Great-great-grandparent's sibling.
My great-great-great-pibling is a good person.