I have a copy of the Pedigree of the PHIPPS, FFIBBS or PHIBBS family compiled by Rev Wm ball-Wright and Owen Phibbs in 1890 (the original is in the Royal irish Academy in Dublin.
This booklet makes no reference to a Harden Phibbs but does refe to Harlow (Harloe) Phibbs (this appears to be a family name)is it possible that your ancestors name has been changed?