Hi, you can work out from the free bmd, the names of the mothers you asked about, I just put Osling in surname box filled nothing else in, then just clicked the marriage choice, as there are so few Oslings.
So, The Osling that married Trev Bowes 1932 was Ann.
The Osling that married Linnard in 1916 was Jessie.
The Osling that married Comrie 1932 was Olwyn.
Can you tell me the christian name of the wife of the first Ernest Osling, as back then on the freebmd record they just give you all the names of the people that got married in that district/date/year, so there was 2 couples married the same time, and I don't know who married who, though there is a Jessie, wonder if its her.