The family will freak out..so get ready to hear about it til death do you part. I had something similar happen to me. We used to run an AKC kennel, and kept a puppy from one of our litters of Labs. We originally named him Thor, but he wouldn't respond to the name. So we began testing all kinds of names to see if he'd come to any of them. We tried, Bowser, Rooky, Thor, and more. But when he heard "Mike" he'd come running. He'd bark with glee. He'd do tricks, no joke. So "Mike" it was.
Coincidentally, a close family friend, who happened to adopt two puppies from the same litter, lost a dear friend to illness that week, and the deceased name happend to be "Michael." We thought calling the dog Mike wasn't quite the same as calling him "Michael" but to the friend it was. The friend was actually annoyed..but our new puppy wouldn't come for anything else. The friend is dealing with it, but when ever they get the chance, they make nasty remarks about us giving the dog a "person's name." Interestingly, they named their puppies "people names" too.
I like Isabella, Chloe, Beryl, Gianna, Katarina, Elsbeth (not a typo- just an old english version of Elizabeth)Ava, Kealy, Emma, and Theresa.