Have you been to the site of the Kerry parish records online?
The marriage of Ellen Sullivan and Edward McDonnell is shown in Jan 1871 as well as the baptisms of the tree children whose names you have.
See Link http://tinyurl.com/97exuts
They were living in Hogan's Lane in Killarney. Have you searched the 1901 Irish Census to see if you can find any of the family there.