Grandparent’s half-first cousin.
My half-first great-cousin-pibling is a good person.
Great-grandparent's half-sibling.
My half-great-great-pibling is a good person.
Great-grandparent's half-sibling.
half-great-great-pibling.
1. The spouse of one's grandparent's sibling's child.
2. The child of one's grandparent-in-law's sibling.
My cousin-pibling-in-law 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.
Pibling-in-law (only pibling's spouse).
My pibling-by-marriage is a good person.