maybe they name their sims after themselves. I do somtimes on weekends. I am a gamer of the sims games(but I'm still trying to get all the expansion packs) and I look in this baby name book online. There should be a link.
Heather Sims's birth name is Heather Sims.
Bennett Sims's birth name is Sims, Bennett Byron.
Danny Sims's birth name is Danny Drew Sims.
Derrick Sims's birth name is Derrick Lee Sims.
Duke Sims's birth name is Duane B. Sims.
Gavin Sims's birth name is Gavin Andrew Sims.
Gregory Sims's birth name is Gregory R. Sims.
Jena Sims's birth name is Jena Michelle Sims.
Monica Sims's birth name is Monica Louise Sims.
Randall Sims's birth name is Randall L. Sims.
Stefan Sims's birth name is Stefan Scott Sims.
Wes Sims's birth name is Wesley Edward Sims.