Complex sentence: Smoke Johnson married Helen Martin (1798--March 27,1866), daughter of Catherine Rolleston, a Dutch woman who had been captured as a girl and adopted as a Mohawk into the Wolf clan, and "Ohyeatea", also known as George Martin.
Split into simpler sentences: Smoke Johnson married Helen Martin (1798--March 27,1866). She was the daughter of Catherine Rolleston, a Dutch woman who had been captured as a girl and adopted as a Mohawk into the Wolf clan, and "Ohyeatea", also known as George Martin.