Quadruple-4C: Person who, in relation to the other person, has zero parents, zero grandparents, zero great-grandparents, zero great-great-grandparents and eight great-great-great-grandparents in common.
My quadruple-fourth-cousin is a good person.
Son of their grandparent’s half-sibling with the other grandparent’s full sibling.
My sesqui-first cousin-uncle is a good person.
Sesquiple-3C: Person who, in relation to the other person, has zero parents, zero grandparents, zero great-grandparents and three great-great-grandparents in common.
My sesquiple-third-cousin is a good person.
1- Parent's third-cousin.
2- Third-cousin's child.
My third-cousin-once-removed is a good person.
1- Great-great-grandparent's sibling's great-grandchild / Parent's third-cousin.
2- Great-grandparent's sibling's great-great-grandchild / Third-cousin's child.
My third-cousin-once-removed is a good person.
1- Parent's third-cousin.
2- Third-cousin's child.
third-cousin-once-removed.
The daughter-in-law of one's grandparent-in-law's sibling.
My first co-cousin-aunt-in-law is a good person.