Complex sentence: Shortly after Gortner's sixteenth birthday his father absconded with the money, and a disillusioned Marjoe Gortner left his mother for San Francisco where he was taken in by, and became the lover of, an older woman.
Split into simpler sentences: Shortly after Gortner's sixteenth birthday, his father absconded with the money and a disillusioned Marjoe left his mother for San Francisco. There he was taken in by and became the lover of an older woman.