William Andrew is currently shown as the son of Thomas Andrew and Mary Heneage. This appears to be a fabrication. The 1618 Northamptonshire Visitation at https://archive.org/stream/visitationsofnor00harvrich#page/62/mode/2up doesn't show that Thomas had a son William. See also this website: http://powys.org/pl_tree/ps27/ps27_331.html
Does anybody have any primary source documentation on the parents of William Andrew?