No, they`d be the second sisters great nieces and nephews
Your grandfathers' sisters' grandchildren are your second cousins.
You are a great-aunt.
You would be their great Aunt.
Children of sisters are first cousins. Grandchildren of sisters are second cousins. Great grandshildren of sisters are third cousins.
Jesse Owens had six brothers and sisters
Your grandmother's sister's grandchildren are your second cousins.
The Gerald Sisters are alive and well and still live in and around Mullins SC. Doris Gerald -Brown lives in Florence with her daughters and grandchildren.
Enrique Inglesias is the famous popstar son of Julio Inglesias.
They all have children - Delois and Rodessa have grandchildren and great-grands. There is a documentary in the works featuring the Barrett sisters in a recent concert, as well as personal interviews with them and their children.
The Dutch royal family is HM Queen Beatrix of the Netherlands her sisters, sons, their wives, grandchildren, etc. The British Royal family is HM Queen Elizabeth of The United Kingdom her husband, sons, daughter, grandchildren, great-grandchildren, cousins etc.
Gregg Allman and Duane Allman do not have any sisters.
Your ancestors are the people whose children lead eventually to you. They are your mother and father, grandmothers and grandfathers, great grandparents, great great grandparents, etc. Your cousins are the children, grandchildren, great grandchildren, etc, of the brothers and sisters of your ancestors.