Maggie married a Scot named McKenzie who came from the Isles (name unknown), they bought a small farm and named it Rockwell. They prospered and moved to a larger farm which they named after his home island.
Ed J. McKenzie, who signed A.Lena's autograph book "Digger E.J. McKenzie, A.I.F., 3.2.19" and appears in photographs with sergeant's stripes was not their son, I suspect he was Murdoch's brother's son (assuming Murdoch had a brother John).
There is a photograph sent to Billy Dunne in Carrigeen of a younger boy Bren (Brennie) in some sort of military-style uniform who describes himself as "your nephew" on the back.
Legend has it that they had a daughter who married into a prominent ?Sydney family, Smith or more probably Smythe. There was a son but the marriage failed and Maggie adopted the boy who became Smythe-McKenzie or McKenzie-Smythe.
There may have been a second daughter as there is a photo of a young boy who looks like Bren, with two girls.
Margaret Dunne
1857 or 1858 if she was 43 when she married. However, I failed to find her baptism in Newinn. I did find the baptism of a Margaret baptised in Newinn on April 14, 1851 with parents Edmund Dunne and Margaret Tobin, Rockwell. Either Maggie understated her age by 7 years, or this Margaret died and Maggie was a second Margaret. In which case, why no baptism? (I'll have to check the surrounding parishes.)
1879 godmother to Billy's Kate in Newinn.
1901 On Wednesday, July 3, Margaret Dunne married Murdoch McKenzie at St. Patrick's Cathedral, Melbourne. The marriage was registered No.3198 in the District of Bourke. (Maxi Ref 5240)
Maggie was aged 43, born in Cashel, Ireland, a Housemaid, and gave her present address as Muir Street, Richmond. Under "Usual Address" is Victoria. Her parents are listed as Edmund Dunne (Carpenter) and Margaret Tobin.
Murdoch was aged 41, born in Geelong, Victoria, a Farmer, and gave his present and usual addresses as Corowa, New South Wales. His parents are listed as Alexander McKenzie (Farmer) and Marion Bruce. [Corowa is a town on the NSW side of the Murray River across from Rutherglen, about 60km downstream of Albury.]
The celebrant was Joseph Murphy, Catholic Priest, and the witnesses were John Alexander McKenzie and Mary Louisa Dunne.
One odd thing about this certificate is that the marriage was "by dispensation", all the other (8) certificates I have seen have "by license". I have no idea of the significance of this.