Yes, they had two children. A girl called Roxanne and a boy called Fred.
Angelina Johnston.
Fred Weasley died and did not have children. George Weasley married Angelina Johnston and had two children: Roxanne and Fred.
Yes.
Arthur, Molly, Bill, Percy, George, Ron, Ginny.
Angelina Johnston
Nobody that we know of. He married Angelina Johnston.
Fred Weasley took Angelina Johnston, but it is unknown who George Weasley took.
No, he was killed in the final battle at Hogwarts.
Fred Weasley died during the final battle when an explosion caused a wall to collapse. George later married Angelina Johnston and together they had two children named Fred and Roxanne Weasley. George continued to run Weasley's Wizard Wheezes with help from Ron.
William 'Bill' Weasley married Fleur Delacour in the seventh book. They have three children: Victoire, Dominique and Louis. Charlie Weasley never married. Percy Weasley married a woman named Audrey and they have two children: Molly and Lucy. Fred Weasley died in the final battle. George Weasley married Angelina Johnston together they have two children: Fred and Roxanne. Ronald 'Ron' Weasley married Hermione Granger. They had two children: Rose and Hugo. Ginerva 'Ginny' Weasley married Harry Potter and had three children: James Sirius, Albus Severus and Lily Luna Potter.
George Weasley married her. Fred Weasley died.
George Weasley lost an ear during the Seven Potter's fight and Fred Weasley died during the final battle. George went on to marry Angelina Johnston (whom Fred took to the Yule Ball) and they had two children; Fred (in honour of his brother) and Roxanne.