co-grandaunt-in-law

Spouse's grandpibling's wife.

co-grandaunt-in-law.

great-grandaunt-in-law

1- Great-granduncle's wife.
2- Spouse's great-grandaunt.

My great-grandaunt-in-law is a good person.

great-grandaunt-in-law

1- Great-grandpibling's wife.
2- Spouse's great-grandaunt.

My great-grandaunt-in-law is a good person.

great-grandaunt-by-marriage-in-law

Spouse's great-grandpibling's wife.

My great-grandaunt-by-marriage-in-law is a good person.

step-co-grandaunt-in-law

Spouse's stepgrandpibling's wife.

step-co-grandaunt-in-law.