Usery's definitions
Child of their parent’s full sister with the other parent’s full brother. Has among themselves; different two parents and four grandparents in common.
My double-cousin is a good person.
by Usery May 2, 2021

Half-second cousin: grandparent’s half-sibling’s grandchild. Has among themselves; different two parents, different four grandparents, one great-grandparent in common and different seven great-grandparents.
My half-2C is a good person.
by Usery May 2, 2021

Septuple-third-cousin: has among themselves; different two parents, different four grandparents, different eight great-grandparents, fourteen great-great-grandparents in common and different two great-great-grandparents.
My septuple-3C is a good person.
by Usery May 2, 2021

My half-brother is a good person.
by Usery May 3, 2021

Sextuple-third-cousin: has among themselves; different two parents, different four grandparents, different eight great-grandparents, twelve great-great-grandparents in common and different four great-great-grandparents.
My sextuple-3C is a good person.
by Usery May 2, 2021

Triple-third-cousin: has among themselves; different two parents, different four grandparents, different eight great-grandparents, six great-great-grandparents in common and different ten great-great-grandparents.
My triple-3C is a good person.
by Usery May 2, 2021

My half-1C1R is a good person.
by Usery May 2, 2021
