I realize that this original post is several years olds, but here goes anyway...
I believe your original information for FRANCES FACY's year of birth (1817) was erroneous and that she was not the Frances Facy who was christened in Egloskerry on February 8, 1803 (to John and Nancy Facy).
Rather, I have concluded that your FRANCES FACY was "privately baptized" in Egloskerry on October 10, 1809 by her parents, William and Elizabeth Facy. Unfortunately, Frances did not live long, which probably explains why the christening was private. More than likely she was sick or close to death shortly after her birth. Did you find that Frances was buried a few days later in Egloskerry? There is a burial record for her dated October 14, 1809.
If you do not have data on FRANCES' parents, here is something that might be helpful:
William was born during 1781 and was buried in Egloskerry on September 28, 1826. He had married Elizabeth Jolliffe in the neighboring parish of Tremaine on April 11, 1805.