first great-cousin-aunt

Grandparent's female first cousin.

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

sesqui-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 sesqui-first-cousin.
6- Sesqui-first-cousin's child.

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

first-cousin-3X-removed

First-cousin-thrice-removed (1C3R).

My first-cousin-3X-removed is a good person.

first co-cousin-nibling-in-law

The grandchild-in-law of one's parent-in-law's sibling.

My first co-cousin-nibling-in-law is a good person.

double-first cousin-nephew

Son of their maternal first cousin with the paternal first cousin or double-first cousin’s son.

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

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.

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.