I am wondering whether Vernard was a mis-transcription for something else, e.g. Vernon or Bernard? B and V are easily mistaken for each other when spoken...

...I've had a look on the Internet since writing this and to my surprise Vernard is a name, so it could have been Vernard after all. It's a German name derived from Bernard. There is the Gilbert Vernard Tyler born in March 1908 in Croyden who I can check for more details when I go to the local library as it has a full subscription to Ancestry.

Elizabeth TYLER 18 and Henry Hochleitner marry -
Name: Henry Hochleitner
Name: Elizabeth Tyler
Date of Registration: Jul-Aug-Sep 1908
Registration district: Monmouth
Inferred County: Monmouthshire
Volume Number: 11a
Page Number: 49

and this Gilbert is born 4 or 5 months before they marry

Name: Gilbert Vernard Tyler
Date of Registration: Jan-Feb-Mar 1908
Registration district: Croydon
Inferred County: Surrey
Volume: 2a
Page: 350

and then he is living with his grandmother in 1911 - time to get a copy of the Birth cert !