5X-grandmother 

Great-great-great-great-grandmother.

My 5X-grandmother is a good person.

5X-grandmother by N8953SW June 26, 2021

6X-grandmother

Great-great-great-great-great-grandmother.

My 6X-grandmother is a good person.

6X-grandmother by N8953SW June 26, 2021

7X-grandmother 

Great-great-great-great-great-great-grandmother.

My 7X-grandmother is a good person.

7X-grandmother by N8953SW June 26, 2021

8X-grandmother

Great-great-great-great-great-great-great-grandmother.

My 8X-grandmother is a good person.

8X-grandmother by N8953SW June 26, 2021

great-grandmother 

Grandparent's mother.

Great-grandmother.

great-grandmother by Simaduria July 26, 2024

great-grandmother-in-law 

Spouse's great-grandmother.

great-grandmother-in-law

great-grandmother-in-law by Simaduria July 27, 2024

Step Great-Grandmother 

1. The grandmother of one's stepmother or stepfather.

2.The stepmother of one's grandmother or grandfather.

3.The mother of one's grandmother's husband or grandfather's wife; but not their biological great-grandmother.

His Step Great-Grandmother was the wife of his Great-Grandfather.

Step Great-Grandmother by Stepman December 11, 2017