Josey - unfortunately I have nothing for 1851 - in 1851 his family were in Stow but he wasn't with them. In 1861 and 1871 he's in Nenthorn, in 1861 with his family after his father's death and in 1871 he's married to Margaret Keddie. He hasn't showed up in my searches for 1851 but it's possible I need to search more on name variants

Don - William Lauder was born about 1835, the son of George Lauder (b abt 1801) of Westruther and Elizabeth Kelly. William Lauder later married Helen Murray from Dumfries. George's children were John, Charles, Elizabeth, George, William, Mary, Jane, Margaret and Helen. Is that enough info?