Hi Carol -- I have some info on this line although I am not connected to it myself. The info goes back about four generations earlier than the Stephen IDENDEN who was married to Elizabeth HARRIS.
If you can let me know exactly what kind of info you are looking for, maybe I can be of help to you. Regards, Andrea (in western Canada)
P.S. My maternal grandmother was an IDDENDEN, also from Kent, ENG. Not connected to your line, though, as far as I know.