Thank you so much, it's as I feared, several little ones didn't survive long,
Maybe Elizabeth moved away to work, her step-sister Sarah I've found "in service" but I seem to have lost Elizabeth and her older sister Ann. They could have married but with such common names it's not going to be easy tracking them down. It may seem odd trying to find out what happened to such a large family I'm curious, or nosey depending which way you look at it.
Thanks again, it's been a great help.