Sibling's great-great-great-grandson.
My great-great-great-grandnephew is a good person.
by Gtopql November 23, 2019
Get the great-great-great-grandnephewmug. Half-sibling's great-great-great-grandson.
My half-great-great-great-grandnephew is a good person.
by Seo48787 October 28, 2021
Get the half-great-great-great-grandnephewmug. Spouse's great-great-grandniece's husband.
My co-great-great-grandnephew-in-law is a good person.
by JAMP12 September 21, 2021
Get the co-great-great-grandnephew-in-lawmug. My step-great-grandnephew is a good person.
by User655 July 25, 2021
Get the step-great-grandnephewmug. Spouse's great-grandniece's husband.
My co-great-grandnephew-in-law is a good person.
by JAMP12 September 21, 2021
Get the co-great-grandnephew-in-lawmug. Spouse's great-grandnibling's husband.
My co-great-grandnephew-in-law is a good person.
by Wonbig October 13, 2021
Get the co-great-grandnephew-in-lawmug. 
Get the great-great-grandnephewmug.