I found the Ontario birth registrations of Robert John Irish and his brothers as per the 1881 Census of Scarborough which shows William J. aged 7; Robert J. aged 4 and Orley H. aged 1 living with Margret Irish, aged 27.
All three births were recorded in York County, Division of Scarborough.
William James Irish – Reg No. 028462 b. Feb 04, 1874 Father’s name: William Irish; Occ - Farm Servant Mother’s name: Margaret Calender (shown in index as Galender) Informant: William Irish, Scarboro
Still Born Irish – Reg No. 027210 b. Oct 12, 1875(female) Father’s name: William Irish; Occ - Labourer Mother’s name: Margaret Callendar Informant: Mrs. Irish, Lot 32 Conc B, Scarborough
Robert John Irish – Reg No. 038725 b. April 05, 1877 Father’s name: William Irish; Occ - Farm Servant Mother’s name: Margaret Calendar Informant: William Irish, Scarboro
Orlief Edward Irish – Reg No. 039614 b. Nov 01, 1879 Father’s name: William Irish; Occ - Labourer Mother’s name: Margaret Calender Informant: Mrs. Margaret Calender (sic), Lot 28 Con B
Since sending you my message I managed to located Edith and Robert John Irish on an on-line obituary index out of Alberta.
Google ‘Grand Prairie and District Branch Alberta Genealogical Society’ From their Home Page, click on ‘Obituary Index’ in the column on the left side of the page. Note that they charge for copies of obitiuaries: ‘Requests for obituary copies may be made to our "Researchers Group". We request a donation of $10.00 per obituary plus the cost of photocopying and postage for this service.’ Scroll down and click on ‘Peace River Records Gazette 1952 – 1971 The list is alphabetical & Edith and Robert John are the only IRISH surname. You will notice that there is an entry for a Decourcey IRELAND. He was the brother in law of Edith (nee Tronson) Kieffer Irish as he had married Edith’s younger sister, Mary, in 1900. The IRELAND family moved to Alberta about 1907.
If you obtain a copy of Robert John Irish’s obituary, I’d appreciate knowing what it says.