There are not many Llewellyn Robinsons about but one was buried in the parish of German 17th June 1939 see www.lawsons.ca.

Maybe the same one married Ellen Griffiths at St Marys Birkenhead Wirral in 1910, across the River Mersey from Liverpool see http://cheshirebmd.org.uk/
The application form for the certificate is also there if applicable.

I can't see a marriage on Merseyside to Catherine so you may need to search the register in Douglas from 1922.

Len Faragher