It's not often that the Irish branch of the family is the deepest. Especially the Coddington side, but there are other bits that could be added eg:
On the English side the Garsides should be easy enough if we can be certain who Margaret's mother was.
Have to go way, way back (15th Century) but we were 16th cousins twice removed if the uncertainties in the evidence are ignored. Common ancestor is Joan, the daughter of John Tiptoft KB .