All information from ancestry.ca unless otherwise stated.
Archy Massia, b 9 Jul 1901, s/o Peter Massia & Marguerite Monnett, Prescott
Nellie Massia, b 17 June 1905, d/o Pierre Massia & Maggie Monette, Prescott
I don't see a marriage for them either in Ontario or on the Druoin Collection for Quebec.
Maggie Massia, 19, d/o Peter Massia & Maggie Minnette, married Octave Cardinal, 27, s/o Octave Cardinal & Henrietta Denis, witn: Frederic Massia & Henrietta Cardinal, 31 Dec 1909, Vanleek Hill, Prescott, Registration #017686.
1891 census Hawkesbury, Prescott
Peter, 27, Ont
Maggie, 22, Ont
Frederic, 3, Ont
Maggie, 5/12, Ont
1901 and 1911 census on www.automatedgenealogy.com
I didn't find them on either census but they must be there someplace.
Peter Massia, 61yrs3mos15days, b 26 Jan 1861 VanLeek, labourer, s/o John Massia & Christine Porrier/Perrier, informant: Peter Massia, son, of Alexandria, burial: Lochiel, died of chronic myocarditis, 12 May 1922, Lochiel Glengarry, Registration # 030455.
Marriages of children of Christopher Piche & Malvina/Alvina Labre
Christopher Alexander, b 1888, married Victoria Sauve, 4 Nov 1919, Glengary
Catherine H, b 1877, married Alexr Laroche,25 Sept 1894 Glengarry