Your first cousin's great grand uncle (also called great great uncle) could be your great great uncle, or could be unrelated to you.
The same applies to the great great uncle of your second cousin.
For other cousin relationships the possibilities become more varied, but always include not being related to you at all.
Your aunt's daughter is your first cousin, as is your aunt's son.
She would not be. You uncle's children are your first cousins and his grandchildren are your first cousins, once removed. Your children and your uncle's granddaughter are second cousins to each other.
You are the grand uncle to any children your nephew or niece have.They would be your grand nephew or grand niece.If the children of your nephew/niece have children of their own, you'd be a great uncle too.
The children of your grand uncle are First Cousins to one of your parents, so you and they are First cousins, Once Removed.
You and the granddaughter of your grandmother's brothers, and sisters, are first cousins.
Your uncle is your child's great uncle and your grandchild's great great uncle. Your grandson is your uncles great great nephew.
Your great uncle's children are your parent's first cousins and your first cousins once removed.
You are first cousin, once removed to the children of your great uncle.
Technically you not related by blood as its not genetically correct.But however you are Technically distantly related by marriage and you share same grand uncle and grand aunt and you can angue that uncle and aunt or grand uncle and aunt are common ancestor .While Aunt and Uncle are not common ancestor in truest sense they are still two people who are couple and parents of you cousins and you will always will have connection that you share aunt and uncle and cousins.So to pin point it down to exact relation you be 2nd cousins in law.
Your uncle's daughter is your first cousin. In the English language, it does not matter whether the uncle is a maternal uncle or a paternal uncle. All the children of your aunts and uncles are your first cousins.
Your children are the cousins of your niece. Your niece's children would be second cousins to your children, and vice versa.
Your grandmother's nephew would be your parent's first cousin. They would be your first cousin once removed. Since the child of your cousin is a generation away from you they are the once removed.