Spouse's great-great-granduncle's wife.
My co-great-great-grandaunt-in-law is a good person.
by JAMP12 September 21, 2021
Get the co-great-great-grandaunt-in-lawmug. My great-grandaunt-in-law is a good person.
by Gerald128 April 7, 2021
Get the great-grandaunt-in-lawmug. My step-great-grandson is a good person.
by Elivaldeq November 24, 2019
Get the step-great-grandsonmug. The granddaughter-in-law of one's spouse's sibling.
My co-great-niece-in-law is a good person.
by Elivaldeq November 24, 2019
Get the co-great-niece-in-lawmug. Sibling's great-great-grandchild.
I have 212 great-great-grandniblings (106 great-great-grandnieces and 106 great-great-grandnephews).
by Gerald128 April 6, 2021
Get the great-great-grandniblingmug. 
Get the half-great-great-great-auntmug. The great-great-grandparent of one's spouse.
My great-great-grandparent-in-law is a good person.
by Rwopazaq November 24, 2019
Get the great-great-grandparent-in-lawmug.