1- Child of their parent’s full sibling with the other parent’s half-sibling.
2- Person who, in relation to the other person, has zero parents and three grandparents in common.
3- Sesqui-first-cousin.
4- Sesqui-1C.
My sesqui-cousin is a good person.
A child of a parent's half-sibling with the other parent’s full sibling; the relative who has with the other person only three grandparents in common, but parents are different.
My sesqui-cousin is a good person.
Child of their parent’s half-sibling with the other parent’s full sibling. Has among themselves; different two parents, three grandparents in common and different one grandparent.
My sesqui-cousin is a good person.
Child of their parent’s half-sibling with the other parent’s full sibling.
My sesqui-cousin is a good person.
Sesqui-first cousin’s grandson.
My sesqui-first great-cousin-nephew is a good person.
Sesqui-first cousin’s grandchild.
My sesqui-great-cousin-nibling is a good person.
Child of their grandparent’s half-sibling with the other grandparent’s full sibling.
My sesqui-first cousin-pibling is a good person.