Mother's grandson as regards her daughter is either her (daughter's) son or her (daughter's) nephew.
The son of your Uncle's son is your uncle's grandson. Your uncle's grandson is your first cousin, once removed.
She would be his Great Aunt
Your daughter's son is your grandson and you are his grandparent.
3rd cousin I think:-)
Nero was the son of Agrippina. Agrippina was the daughter another women named Agrippina. Agrippina was daughter to Julia, who was the daughter of Augustus. Augustus and Nero are linked in some way.
Your daughter's daughter's son is your great grandson, and you are his great grandfather or great grandmother.
My daughter's husband is my son-in-law, so is my granddaughter's husband my grandson-in-law? Pat
The relation of the mother;s sister to daughter is niece-aunts.
There is no relation between you and your grandmother's cousin-in-law's grandson.
There is no real blood relationship, as you do not share a common ancestor. You could refer to him as your grandson-in-law. It is probably easier just to call him by name and explain that is your granddaughter's husband.
Your grandson.
Your father's great grandson could be your grandson, or your great nephew.
If your daughter-in-law's grandson is a child from a marriage before she married your son, or after their marriage ended, her grandson is not related to you. If he is a child of the marriage between your son and your daughter-in-law, then he is your great grandson.
You and your uncle's grandson are first cousins once removed.
Your grandson is your sister's great nephew and she is his great aunt.
You grandson is great great nephew to your uncle. You uncle is great great uncle to your grandson
You grandson is great great nephew to your uncle. You uncle is great great uncle to your grandson