Your great grandfather John Henry Brown, born about 1878, was a brother to Jemima born about 1876, according to what I have found. They were the known children of Robert Woods' first marriage to Grace (Colghburn?--thanks for the surname). Grace was born about 1850, dying 1880. Robert 's second marriage was to Sarah Elliott, born about 1846. Their daughter was Celestia, born 1 Sept (or 31 Oct) 1888, dying 7 may 1889, all buried in Sand Hill Cem. Your information plus mine ties Robert (Grace) to his parents John Brown, born about 1811 in Ireland and his wife Eliza Michell, born about 1816 in Ireland, both buried in Sand Hill. I have found siblings for Robert. They are Mary Jane, b. 1841, Agness, b. 1843, Ann, b. 1845, Matilda, b. 1847, Henry, b. 1854, Margaret, b. 1856. I have copies of the 1861, 1871 & 1881 census, Pittsburgh, Frontenac as documentation, as well as Sand Hill cem. records.