It does look like Philip Andrewartha could have been Emily Antoinette's . . step father, since she was born (c1880) before Philip's marriage to her mother in 1885. Alternatively Philip may have been the natural father just putting things right 5 years down the line? So we still don't know who the father may have been but Emily's birth record is Redruth, Dec Qtr 1880, vol 5c , page 188, does anyone have it?
Peter Parry