Great-great-grandparent's sibling's great-great-grandchild.
My fourth cousin is a good person.
1- Great-great-grandpibling's great-great-grandchild.
2- Living being that has zero parents, zero grandparents, zero great-grandparents, zero great-great-grandparents and two great-great-great-grandparents in common with other living beings.
Someone who, in relation to others, has zero parents, zero grandparents, zero great-grandparents, zero great-great-grandparents and thirty-one great-great-great-grandparents in common.
Irregular-sexdecuple-fourth-cousin.
Someone who, in relation to others, has zero parents, zero grandparents, zero great-grandparents, zero great-great-grandparents and seven great-great-great-grandparents in common.
Irregular-quadruple-fourth-cousin.
Fourth-cousin-six-times-removed (4C6R).
My fourth-cousin-6X-removed is a good person.
1- Fourth-cousin's spouse.
2- Spouse's fourth-cousin.
My fourth-cousin-in-law is a good person.
Someone who, in relation to others, has zero parents, zero grandparents, zero great-grandparents, zero great-great-grandparents and twenty-five great-great-great-grandparents in common.
Irregular-tredecuple-fourth-cousin.