Great-grandchildren
Yes, Jimmy Swaggart does have grandchildren and great grandchildren. As of May 2014, he has 3 grandchildren and 6 great grandchildren.
Queen Elizabeth has 8 grandchildren and 5 great-grandchildren.
Step-great-grandchildren.
The common ancestor is your parents. Your children and your sister's children are first cousins. Your grandchildren and your sister's grandchildren are second cousins. Your great-grandchildren and your sister's great-grandchildren are third cousins.
Yes, "great-grandchildren" is hyphenated correctly.
Your great aunt is not your great grandparent but she could be a great grandparent if she has children , grandchildren and great grandchildren.
He has 14 grandchildren, 4 great grandchildren and 1 great great grandchild. I know because I'm one of them!
He has 14 grandchildren, 4 great grandchildren and 1 great great grandchild. I know because I'm one of them!
You are a great-aunt.
their mother and father
Irene Houston Williams and Patricia Houston Williams were great grandchildren of Sam Houston