Dear Janet, this sounds hopeful.(Please understand that I am am dabbler and not yet a researcher.)I gather that there are two streams of Ewarts in Victoria.My lot, whose patriarchs are the Robert Bruces, and the Yarra Valley Ewarts.
The YV Ewarts appear to spring from a horse trainer who was brought to Australia, either during or a little before the gold rush. There is a Ewart Street in Caulfield, near the race course.Around the Warburton area there are Ewart pioneers who include a road engineer (David, I think), a Post Master, a publican and a saw miller. A later Ewart was a Shire Councillor. In that part of the world there is a Ewart Rock and a Ewart Park.
My Ewarts ended up in central Victoria.Old RB, my GGPa, his wife Hanna and their 10 surving kids had their family home in Tungamah.(I visited the place when I was very young. I am now 55. I remember Hanna as a tiny and physicaly frail but still tremendously powerful figure.) My GPa, Hayden, who was a Light Horseman and a Gallipoli veteran, and his wife "Pops" (really Victoria) had a home in Tallangatta.My parents met when they both attended High School in Wangarrata.Others lived on farms and in towns spread between Shepparton, Beechworth and Wodonga.
I would love to learn more about your Peebleshire Robert.