3C:
1- Parent's second-cousin's child.
2- Grandparent's first-cousin's grandchild.
3- Great-grandparent's full sibling's great-grandchild.
4- Person who, in relation to the other person, has zero parents, zero grandparents, zero great-grandparents and two great-great-grandparents in common.
My third-cousin is a good person.
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Third-cousin-ten-times-removed (3C10R).
My third-cousin-10X-removed is a good person.
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Third-cousin-thrice-removed (3C3R).
My third-cousin-3X-removed is a good person.
by N8953SW June 27, 2021
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Third-cousin-four-times-removed (3C4R).
My third-cousin-4X-removed is a good person.
by N8953SW June 27, 2021
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