Thanks for pointing this out Kenneth. I believe the profile has been tampered with enough times that the dates are out of kilter as you say but not so much because the dates are wrong but the parentage has been changed (you'll note in the Cuator note at the top she is the d/o Roger de Beaumont and Gundred de Warenne.
I have been in contact with the curator of these profiles proposing a merge and have removed the incorrect parentage.
Terry