The great-great-grandmother of one's spouse.
My great-great-grandmother-in-law is a good person.
by Rwopazaq November 24, 2019
Get the great-great-grandmother-in-lawmug. 
Get the great-great-grandmothermug. My step-great-grandmother is a good person.
by QWP998756 October 15, 2021
Get the step-great-grandmothermug. Great-great-grandparent's mother.
My great-great-great-grandmother is a good person.
by Mr. Jacov November 23, 2019
Get the great-great-great-grandmothermug. 
Get the great-grandmothermug. 
Get the great-great-great-grandmothermug. Great-great-great-grandparent's mother.
My great-great-great-great-grandmother is a good person.
by Mr. Jacov November 23, 2019
Get the great-great-great-great-grandmothermug.