1C2R-in-law
1- First-cousin-twice-removed's spouse.
2- Spouse's first-cousin-twice-removed.
2- Spouse's first-cousin-twice-removed.
My 1C2R-in-law is a good person.
co-1C2R-in-law
Spouse's first-cousin-twice-removed's spouse.
My co-1C2R-in-law is a good person.