Rachel Carlson also known as Juliet’s sister and her son. Its not apparent whether Jack knows this or not but if you look closely at the pictures you can see a resemblance. It also makes sense since Juliet’s sister had a baby boy, although we don’t know the time frame I think its pretty safe to say that they are connected. Everytime they show Jack saving someone’s life off the island it has been someone we eventually see connected to him…
