Thank you for posting back Prue.
A couple of random thoughts I’m not sure will help, but perhaps helps show closer family connections Sarah the sister of Cyril who married William Mitchell had a daughter Doris Ivy, born 1909, she married Ernest C HALLETT, and see where she is in 1939
So, surely this means Cyril cannot have washed his hands of Olive.
Also, I note looking at the family of Charles BURROWS and Anness née CUTLER, that Edgar was also Edgar Charles.