Someone who, in relation to others, has zero parents, zero grandparents, zero great-grandparents, zero great-great-grandparents and twenty-six great-great-great-grandparents in common.
Tredecuple-4C: Person who, in relation to the other person, has zero parents, zero grandparents, zero great-grandparents, zero great-great-grandparents and twenty-six great-great-great-grandparents in common.
My tredecuple-fourth-cousin is a good person.
Fourth-cousin-once-removed (4C1R).
My fourth-cousin-1X-removed is a good person.
5.5-tuple-4C: Person who, in relation to the other person, has zero parents, zero grandparents, zero great-grandparents, zero great-great-grandparents and eleven great-great-great-grandparents in common.
My 5.5-tuple-fourth-cousin is a good person.
Fourth-cousin-seven-times-removed (4C7R).
My fourth-cousin-7X-removed is a good person.
8.5-tuple-4C: Person who, in relation to the other person, has zero parents, zero grandparents, zero great-grandparents, zero great-great-grandparents and seventeen great-great-great-grandparents in common.
My 8.5-tuple-fourth-cousin is a good person.