Half-sibling's great-granddaughter.
My half-great-great-niece is a good person.
by Gtopql November 23, 2019
Get the half-great-great-niecemug. 
Get the great-great-great-grandauntmug. My step-great-grandchild is a good person.
by Elivaldeq November 24, 2019
Get the step-great-grandchildmug. 
Get the half-great-unclemug. Spouse's great-great-grandparent.
My great-great-grandparent-in-law is a good person.
by Gerald128 April 7, 2021
Get the great-great-grandparent-in-lawmug. 
Get the great-granddaughter-in-lawmug.