Definitions by ABGR

double-fourth-cousin 

Double-4C: Person who, in relation to the other person, has zero parents, zero grandparents, zero great-grandparents, zero great-great-grandparents and four great-great-great-grandparents in common.

My double-fourth-cousin is a good person.

double-fourth-cousin by ABGR June 9, 2021

sesqui-fourth-cousin

Sesqui-4C: Person who, in relation to the other person, has zero parents, zero grandparents, zero great-grandparents, zero great-great-grandparents and three great-great-great-grandparents in common.

My sesqui-fourth-cousin is a good person.

sesqui-fourth-cousin by ABGR June 9, 2021

fourth-cousin 

4C: Person who, in relation to the other person, has zero parents, zero grandparents, zero great-grandparents, zero great-great-grandparents and two great-great-great-grandparents in common.

My half-fourth-cousin is a good person.

fourth-cousin by ABGR June 9, 2021

half-fourth-cousin 

Half-4C: Person who, in relation to the other person, has zero parents, zero grandparents, zero great-grandparents, zero great-great-grandparents and one great-great-great-grandparent in common.

My half-fourth-cousin is a good person.

half-fourth-cousin by ABGR June 9, 2021