I don't know if this information will help you with what you are looking for.
In the 1910 Bay City Census there was a Lester Boiteau, age 50 with wife Mary age 47 and her children Melvina Jonkis, age 18, Nelson Jonkis, age 14 and Henry Jonkis age 12. They were living at 421 36th Ave. in Bay City.It was a second marriage for both Lester and Mary.
In the 1911 City Directory there was an entry for Lester Boiteau that said he died on April 27, 1911, age 52.
In the 1913 City directory Daniel McRay was living at 421 36th Ave. Mary Boiteau did not have an entry under her name.
In the 1920 Bay City Census Mary McRay, age 57, widow, was living with Delphine Jonkis, age 29, Nelson Jonkis, age 24 and Henry Jonkis age 21. They were living at 604 Garfield Ave.
Hope this helps narrow the marriage date somewhat. Bridget