I have an extensive Lawson family tree, going back to the birth of William Lawson (1763) who married Agnes Dissentin, with whom he had 8 children. There are a number of "Grace Lawsons" in this family tree. One was Grace H. Lawson, born 1867 (d. 1902) to parents Robert Lawson (b. 1828 d. 1912), and Janet Muirhead (b. 1828 d. 1884). She had 6 siblings: Elizabeth, Robert, William, James, Jessie and Archibald (for whom I suspect my father was named (my father - Archibald Lawson Reid (b. 1916 d. 1996). My chart shows no marriage or children for her. I also show Grace Florence Lawson (b 1895) who married P. Thornton in 1915, and her mother was also named Grace (nee Mann) - Grace Mann married Daniel Lawson in 1887, so may well have been born in 1866-67. Post a note if you want to hear about more "Grace Lawsons" on this family tree.
SusieQ