Hi,
Ovila was baptised in Montreal as M. Avila Nathaniel Marino (corrected to Merineau) b. 23 April 1874, son of Amede Marino, shoemaker and Anathlie Catudel.
A marriage 9th Jan 1908 in Montreal Avila Merineau, son of Amedee Merineau and Natalie St. Jean
to Jessie Louisa Tinnuchi, a protestant, daughter of Bartholomew Tinnuchi and Christina Ann Durston.
Permission granted by the archdiocese and the parish priest to perform the marriage.
On the opposite side of the page to the above marriage,
Baptism of Francis Merineau, b. 9th Jan 1908, child of Ovila Merineau and Tinnuchi.
Avila signs both marriage and baptism, signatures are identical.
A burial record 18 Jan 1915, Ovila Merineau, spouse of Jessie Tinncoi, d. 15 Jan., age 40.
Notre Dames des Neiges Cemetery, add the Merineau name in the "recherche de defunt".
The cemetery has a number of your Merineau's.
https://www.cimetierenotredamedesneiges.ca/fr/recherche-d-un-defuntDB
Added, 1911 Census, Montreal, for Avila transcribed as Morneau
Morneau, Avila, age 36, b. Apr. 1875, boucher
Morneau, Jessie, age 31, wife, b. Apr. 1880
Morneau, Jessie, age 3, daughter, b. Aug. 1908 (think this maybe Frances)
Morneau, Nathalie, age 5/12, daughter, b. Jan. 1910
http://automatedgenealogy.com/census11/SplitView.jsp?id=119896