Great-grandparent's half-brother.
My half-great-granduncle is a good person.
by Gtopql November 23, 2019
Get the half-great-grandunclemug. My great-granduncle-in-law is a good person.
by Wonbig October 13, 2021
Get the great-granduncle-in-lawmug. 
Get the half-great-great-grandunclemug. Spouse's great-great-grandaunt's husband.
My co-great-great-granduncle-in-law is a good person.
by JAMP12 September 21, 2021
Get the co-great-great-granduncle-in-lawmug. Great-great-grandparent's half-brother.
My half-great-great-granduncle is a good person.
by Rwopazaq November 24, 2019
Get the half-great-great-grandunclemug. 
Get the great-great-great-grandunclemug. My great-granduncle-in-law is a good person.
by Gerald128 April 7, 2021
Get the great-granduncle-in-lawmug.