According to the 1939 Register, Emily Earwaker, b 1890, and William, b 1920, are living in Cubbin Street.
There are newspaper reports about Christopher Earewaker for motoring offences:-
A bus driver of Cubbin Street, Kirkdale, in 1930.
Reports in 1934 give his address as Battenburg Street and 118a Kensington.
In 1939, Christopher, b 1894, and Agnes, b 1911, are at a different address, with one younger family member.
It sounds as though Christopher had separated from Emily but may not have been married to Agnes.
David