grandnephew 

Sibling's grandson.

My grandnephew is a good person.

grandnephew by Mr. Jacov November 23, 2019

grandnephew 

Sibling's grandson.

Grandnephew.

grandnephew by Simaduria July 26, 2024

grandnephew-in-law 

1. The grandson-in-law of one's sibling.
2. The grandson of one's spouse's sibling.

My grandnephew-in-law is a good person.

grandnephew-in-law by Elivaldeq November 24, 2019

grandnephew-in-law 

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

My grandnephew-in-law is a good person.

grandnephew-in-law by Gerald128 April 7, 2021

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