In Sayid's afterlife, Sam Jarrah is the son of Nadia and Omer. He is the nephew of Sayid.
The casting call described him as "Sam. Middle Eastern, 9. Raised in America and has no accent. Typical boy: smart, eager, ready to tackle anything and watches out for his little sister. Happy to see an unexpected visitor but sad he can’t stay longer..."
Sam, along with his sister Eva, and David Shephard, is one of three characters known not to exist in the original timeline.