Aghadowey and Christopher - first of all Agnetta and Betsy are one and the same !(I'm old - forgive my lapses,please.I used Agnetta in memory of my mother) 2nd of all - there is a bit of 1831 census for Derry and a little bit of Tyrone,and although it only gives heads of household and number of males and females,that is enough to get on the track to look for people.I spent quite a lot of time in PRONI,in 60's when I was in NI,but at that time wasn't looking for Rosboroughs.Only started doing Harper side(his maternal side) after my husband died in 1996. My David Rosborough and a Margaret Rosborough (wife?,daughter? mother?) are in Derryard on Griffiths 1858/59,but more than that I cannot get.(never did get the cd to go) I have a feeling these Rosboroughs were in Ballymoney/Ballymena area before Derryard/Bovevagh hence my query re 1831 census for any other part of NI. On the other hand - just last week I picked up a bit of info which indicates that this man may have been JOHN DAVID, and just used the David part in every day life (as millions of them did ! Even me - I was christened Elizabeth,but my grandmother -bless her - called me Betsy,and Betsy I've been all my life - except on my passport!) So now you know,and if any of you find a David or John David Rosborough with a daughter Mary Ann(Marianne) b 1834 who m'd Alexander Gibson in Bovevagh on 9-3- 1856 send hin to me . Many thanks to both of you, for your efforts on my behalf. Agnetta/Betsy