Endless Time — Therese A. Kraemer

Drew Bryant fell in love and finally married his high school friend, Sandra Collins.
He becomes a writer in the tradition of his family and begins to unravel the truth of his great-great-great grandfathers fiction books.
After publishing a time travel novel he is visited by an android from the future that saves his wife's life from an alien.
Then all hell breaks loose as he becomes immersed in his families history and future.