Hello, probably a bit late to answer, I have just started looking into my family tree. Gearge Patullo McDonald was my great uncle, known as uncle 'Dod'. He was a tea planter and his daughter was Nancy. Eliza Crockett McDonald was my Grandmother.
Alexander McDonald emigrated to the USA I think prior to the 1930's as did his sister Jessie. He was known as uncle 'Eck' - he had a son called Bruce and remarried very late in lif - hope this helps