FreeBMD has a marriage
Q3 1911, Coventry Registration District, between
Ethel A M Barnacle
and
Josiah C Wilkinson
Vol 6d, p994
and there are births in 1912, 1913, 1918, 1921 and 1926 with the Surname Wilkinson and mother's maiden name of Barnacle. All in Coventry. Can't put names as some of them may still be living.
Also, the birth of an Ethel Alice M Barnacle, Rugby Registration District, Q3 1889, vol 6d, p.536
Check
www.freebmd.org.uk for yourself
STG