Yes, he had two daughters ,June Lee, on February 15, 1962 and Audrey Marina Rachel Oswald, on October 20, 1963 with Marina Prusakova .They married on April 30, 1961.
Yes. Oswald was innocent,in the sense that he never lived to be tried, and here in the US a person is considered innocent until proven guilty. No, if you mean "innocent" to mean "he didn't do it"....
Yes. There has never been any real doubts about it. There has never been any serious question of whether Oswald was guilty--the question was if he worked alone or was part of a conspiracy.After all...