Cardiff Schools Get Behind George Thomas Hospice’s Onesie Walk   Schools from all over Cardiff have pledged their support for George Thomas Hospice’s (GTHC) Onesie Walk through the City Centre on the 25th of April.   Pupils and staff from Cardiff High, Rhydypenau Primary, St Cyres, St David’s College, St John’s College and Whitchurch High have all signed up to the event which starts at 11am at the City Hall in Cardiff.   Meanwhile Fitzalan High, Willows High, Kings Monkton,…