Re earlier msg I have found that Jane Jardine and Robert Thomson both died in 1914 and 2 younger children, Lilian Julie and Thomaszena, both born in Melbourne, died in 1894 and 1920 respectively. There were 3 other children of the 1822 marriage of Thomas McMaster & Margaret Thomson also.
This Dumfries link is not part of my direct lineage. I am researching McMasters of Kirkoswald, Ayrshire. I have the impression that the separate Scottish branches all have their roots in N Ireland but the records (lack of) make it difficult to prove. Rgds Peter Macmaster (we changed from McMaster in 1895)