It does not appear that Thomas Jefferson had any nieces or nephews. He had a daughter, a son in law and two grandsons. He also had an aunt and a first cousin.
I think she had one child, a son. From Octavia Grove (I also have one child, a son!)
Kai Wong is the only son but not the only child. He has siblings.
Nancy
Akihito Tsugonimaya, born in 1933, was the fourth child and first son of Hirohito.
Your daughter and your niece are first cousins. Your daughter than your niece's son are first cousin's once removed. Your daughter's child and your niece's child are second cousins to each other.
Your niece's son is your grand-nephew. You are the child's grand aunt, or grand uncle (whichever applies).
Your granddaughters and son have the relationship of nieces and uncle. Your granddaughters being his nieces and your son being their uncle.
Second Cousin
Cousins
They are 2nd cousins.
Your niece's son is your grand nephew, and you are his great aunt.
niece's - something that belongs to a niece. nieces' - something that belongs to multiple neices. nieces - plural form of neice. person who asked this question - an incredibly dumb person.
Your daughter and your niece are first cousins. Your daughter than your niece's son are first cousin's once removed. Your daughter's child and your niece's child are second cousins to each other.
The word nieces' is the plural possessive form of the word niece (a female child of your brother or sister). Example sentence: Both of my nieces' birthdays are in May.
Your daughter and your niece's child are 1st cousins once removed.
Assuming he is your only sibling with female children, you would have two (2) nieces.