lingo for a non-borrower co-mortgagor

This is the language we add in mortgages when there is a vested owner who is not a borrower on the loan:

The co-mortgagor, _____, has an ownership interest in the real property described herein and has joined in this Security Instrument for the sole purpose of validating the lien.  Said co-mortgagor is NOT a Borrower on the Promissory Note referenced in this Instrument and his joinder in this