Half-third-cousin: great-grandparent's half-sibling's great-grandchild. Has among themselves; different two parents, different four grandparents, different eight great-grandparents, one great-great-grandparents in common and different fifteen great-great-grandparents.
My half-3C is a good person.
Quintuple-third-cousin: has among themselves; different two parents, different four grandparents, different eight great-grandparents, ten great-great-grandparents in common and different six great-great-grandparents.
My quintuple-3C is a good person.
6.5-tuple-third-cousin: has among themselves; different two parents, different four grandparents, different eight great-grandparents, thirteen great-great-grandparents in common and different three great-great-grandparents.
My 6.5-tuple-3C is a good person.
Third-cousin: great-grandparent's full sibling's great-grandchild. Has among themselves; different two parents, different four grandparents, different eight great-grandparents, two great-great-grandparents in common and different fourteen great-great-grandparents.
My 3C is a good person.