Before Peter moved to Desiderata Valley he got Sophie with an unknown mother. It's unclear he was whether or not married with that woman. It's also unknown what happened with that woman.
Peter moved with his daughter Sophie to Desiderata Valley. He met Willow Darga and they got a passionated relationship. His daughter got in love with Carl Fischer. After the death of Michelle, Carl's mother, Carl turned Sophie into a vampire. They ran away to Fear Valley and married there in secret. Peter moved with Willow to Fear Valley too. Their relationship didn't last long because he cheated on Willow with several women. Willow also cheated on him with the Count. Peter moved to his daughter's house to take care for is granddaughter because his daughter and her husband went to college. Willow sold their old house and married the Count.
Peter was a good grandfather to Morgan. He learned her all the toddler skills and he learned her how to study. When she was at school Peter got a lot of romances with several women. Now his daughter and son-in-law are back, he have to find a new place.
- The Dutch name of Peter is Peter Lammerts.
- He shares his surname with Joe Carr.
- He, his daughter and Simon Fischer are the only Sims created with CAS.