Instructions
Start the Sims game and begin playing with the family that contains a Sim or Sims with names you want to change. Make the Sim character active whose name you wish to change.
Press ̶0;Control, Shift and C̶1; simultaneously to bring up the cheat box at the top of the screen.
Enter ̶0;boolprop testingcheatsenabled true̶1; in the cheat box and press ̶0;Enter.̶1;
Press the shift key while clicking on the Sim character. You will see a variety of actions appear around the Sim.
Select the ̶0;Spawn̶1; action and then select ̶0;Tombstone of L and D.̶1; You will see a large tombstone appear next to the Sim.
Click the Sim again and then click the tombstone. The Sim will walk over to the tombstone. Click ̶0;More̶1; and then click ̶0;Rename Sim.̶1;
Enter the new name you desire for your Sim and click the check mark. Your Sim̵7;s name will change.
Press ̶0;Control, Shift and C̶1; simultaneously again to bring up the cheat box at the top of the screen.
Enter ̶0;boolprop testingcheatsenabled false̶1; and press ̶0;Enter.̶1;
Click the ̶0;Buy Mode̶1; and then click the tombstone. Press ̶0;Delete̶1; to delete the tombstone from the Sim̵7;s home.