sesquiple-first-cousin-once-removed

1- Child of their parent’s half-pibling with the other parent’s pibling.
2- Child of their parent’s half-nibling with the other parent’s nibling.
3- Child of their parent’s half-pibling with the other parent’s nibling.
4- Child of their parent’s pibling with the other parent’s half-nibling.
5- Parent's sesquiple-first-cousin.
6- Sesquiple-first-cousin's child.
7- Sesqui-first-cousin-once-removed.

My sesquiple-first-cousin-once-removed is a good person.

cousin-nibling

First cousin's child.

My cousin-nibling is a good person.

great-great-great-cousin-aunt

Great-great-grandparent's female first cousin.

My great-great-great-cousin-aunt is a good person.

double-first cousin-aunt

Daughter of their grandparent’s full sibling with the other grandparent’s full sibling.

My double-first cousin-aunt is a good person.

half-great-cousin-aunt

Grandparent’s female half-first cousin.

My half-great-cousin-aunt is a good person.

cousin-pibling-in-law

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.

irregular-quintuple-third-cousin

Someone who, in relation to others, has zero parents, zero grandparents, zero great-grandparents and nine great-great-grandparents in common.

Irregular-quintuple-third-cousin.