Robert Ralston married Mary Jane Thompson in Philadelphia in 1856(born in Ireland). Their children and birthdates are: John Thompson 1859, James B. 1861, Margaret 1863, Samuel Thompson 1866, Andrew Jackson 1870, Jacob 1874, Mary Jane 1877, Laura Ellen 1881, Henry no date (probably the first born according to the spacing of the other births. With this size family there should be somebody doing research on this line. Thanks for you help!