What’s his name? You want to know who has something. To describe who owns something, you can use either ‘his’ (or ‘her’). While neither of these are wrong, the use of ‘his” in this context is not recommended. If you feel strongly about an item, however, you can use the ‘his’ suffix to indicate who owns it. There are many examples of the use ‘his’ or ‘her’.
What’s His Name?