While I haven't been able to come across an Edward Niles that corresponds with the dates you mentioned there may still be a connection. My Niles line is also from Cape Bald which is actually Cape- Pele, and there are currently still Niles residing in the area. My Niles line is descended from George Noiles and his father was Edouard Noiles.(The name changed to Niles at some point) George would have been born in the mid 1700's. I will keep looking.