grandnephew-in-law 

1- Grandnibling's husband.
2- Spouse's grandnephew.

My grandnephew-in-law is a good person.

grandnephew-in-law by Wonbig October 13, 2021

grandnephew-by-marriage 

Spouse's grandnephew.

My grandnephew-by-marriage is a good person.

grandnephew-by-marriage by NSBC968755 February 25, 2023

grandnephew-by-marriage-in-law 

Spouse's grandnibling's husband.

My grandnephew-by-marriage-in-law is a good person.

grandnephew-by-marriage-in-law by NSBC968755 February 25, 2023

grandnephew 

Sibling's grandson.

Grandnephew.

grandnephew by Simaduria July 26, 2024

grandnephew-in-law 

1- Grandnibling's husband.
2- Spouse's grandnephew.

grandnephew-in-law.

grandnephew-in-law by Simaduria July 27, 2024

great-grandnephew 

Sibling's great-grandson.

My great-grandnephew is a good person.

great-grandnephew by Hgcloziw November 23, 2019

half-grandnephew 

Half-sibling's grandson.

My half-grandnephew is a good boy.

half-grandnephew by Hgcloziw November 23, 2019