I forgot my pattern so I got it wrong a lot to get to the google account page, but my account's not working. I have a Samsung Nexus S and yeah, it's pretty old.
Not much you can do without Google account access. If the phone has an internet connection, you can reset your Google password. Give it up to 72hrs to sync up with the phone. Otherwise, you can boot to recovery mode and reset the phone (which wipes all user data).