I thought that the 1911 census would be the answer my prayers but alas, I still can't find my GGrandfather Matthew O'Brien who was married to Mary Daly. Matthew who is shown as a constable / farmer on his daughters Annie Marie O'Brien's to John Larrigy marriage certificate in 1910 in Dublin. I have checked the DMP records where there is only one Mathew O'Brien listed who seemed to fit the bill as he was from Co.Meath and Annie Marie is shown in the census as being born in Co.Meath 1882. Anne Marie had a brother William shown as being born in Dublin in 1889 according to the 1911 census which would make sense if Matthew had moved to Dublin to be come a member of the DMP, but I have had contact with this Mathew's GGrandson who says that his Mathew married twice as I believe mine did, but his was not to a Mary Daly. I have checked the RIC records whilst in Dublin last week where 3 Matthew O'Brien's are listed but they do not fit in at all. Some of the family lived at 20 Leeson Park Avenue in 1910/1911. It may seem odd but I can not find Annie Marie birth record, I can not find Matthew's marriage to Mary Daly in the records,I can not find the most important one...my Grandmother in the records,she was Teresa O'Brien. Teresa was the youngest of Matthews children. She is shown on her husbands (Daniel Bushe)RIC records as being born in Kings Co. in 1894. She does not seem to be on the all ireland census, I do have her death certificate at aged 34............any advice or help would be much appreciated as on many trips to Dublin from UK have been many times over the 5 years and I can't break down the brick wall.