-Alexander Nelson Steen (born 1836, died after 1897), witness at his brother's wedding, moved to Liverpool, England.
-Sister Henrietta Cooke Steen m.(7 July 1868 Limavady) James G. Strahan, manager of Northern Bank, Newtownstewart.
-Brother William Steen (1839-aft.1897) m. Mary Craig Holmes.
This Rev. George Steen also had several other children in addition to Joseph Thompson and the 3 listed above-
- son (19 Sept.1834 Limavady), d.y.?.
- Henry Cooke Steen (c1835-20 Nov.1844 Limavady), eldest son in 1844.
-Thomas Scott Steen, J.P. (1841-1909), Warrenhill, Victoria Park, Derry, m.1 Mary Hunter, m.2 Alice Josephine Stirling Anderson (d.25 July 1935 St. Mary’s, Sandford Rd., Dublin), Melbourne, Australia.
- daughter (14 Nov.1844 Newtownlimavady).