According to LDS database, marriage was 20 July 1866 Greenock (births of children Thomas and Mary also shown). According to 1881 census they were in West Ham, Essex with children born Scotland and Liverpool (LDS also gives birth of Georgina 1879 Liverpool). There also a brother of Samuel's in the household.
LDS site must be acting up at the moment as I can't find the 1912 or parents' names.