R.P. Marshall - On the 1831 census for Banagher area there is a James Harper with a wife,(no name)2 sons and one daughter,living at Auglish.After a lot of comparisons and calculations I figured out that the sons were about 8 and 6 years old and the daughter about 2 -( no names of course on 1831 census) Maybe this was your Sarah 1929. Since the census was taken in 1831,maybe Elizabeth was born after it was taken. The boys were James and Joseph,which is why I was working on them. As it turns out it wasn't my Joseph,so I went no further with that line. (I have a strong feeling that they ARE connected,way back,but I haven't been able to sort it out so far) My Joseph Harper,like thousands more,went to Scotland to work the harvest,married there,and had his first 2 children there and then returned to Ireland (Co Derry) and had the rest of his family,and continued to live ,and die , there. In my notes from "pencil and paper"days I have 2 other Elizabeths Elizabeth b 1830 daughter of Hugh Harper and ?? m'd John Mercer in 1854 - Limavady,and Elizabeth Harper b 1824 Daughter of Robert Harper and Letitia Heaney.She had a brother James b 1826.There was an Eliza in my line but she died at age 2 years.1868/70 There are no other Sarahs in my lines.Sorry I couldn't be more help.Good luck with your research. Betsy Harper.