Your 14 eth is still sitting on that account and worth a lot of money. It's most likely your own account! You probably have multiple accounts in geth and sent it to one of your other accounts because of the command line issue.
I know it was an old post, but it's been a year and a half and the eth is still just sitting there. I don't know the exact command line to list your accounts, but I'd check and see if that 0x26ab0917ab1b8dc990bafecb6d2b5f45ae851a1a account isn't one of yours already. Then send it back doing the transaction the opposite way, use that account as the sender and send to your other account.