Complex sentence: Feild was the son of Richard Field (d.1542), was born, as is supposed, at Ardsley, in the West Riding of Yorkshire, between 1520 and 1530.
Split into simpler sentences: Feild was the son of Richard Field (d.1542). He was born, it is supposed, at Ardsley in the West Riding of Yorkshire between 1520 and 1530.