third-cousin-1X-removed

Third-cousin-once-removed (3C1R).

My third-cousin-1X-removed is a good person.

first 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 first cousin-pibling-in-law is a good person.

fourth-cousin-1X-removed

Fourth-cousin-once-removed (4C1R).

My fourth-cousin-1X-removed is a good person.

sesqui-great-cousin-nibling

Sesqui-first cousin’s grandchild.

My sesqui-great-cousin-nibling is a good person.

sester-second-cousin

Sester-2C:
Person who, in relation to the other person, has zero parents, zero grandparents and five great-grandparents in common.

My sester-second-cousin is a good person.

sester-second cousin

Child of their parent’s first cousin with their other parent’s sesqui-first cousin or are the child of their parent’s double-first cousin with their other parent’s half-first cousin.

My sester-second cousin is a good person.

first step-cousin-uncle

1. The son of one's grandparent's stepsibling.
2. The stepson of one's grandparent's sibling.
3. The son of one's stepgrandparent's sibling.

My first step-cousin-uncle is a good person.