St David's Day: How much do we know about him?

On 1 March, St David's Day, the people of Wales celebrate the nation in many ways, whether it's wearing daffodils, eating Welsh cakes or singing traditional songs.

But what do we know about the man who is Wales' patron saint?

People in St Davids, Pembrokeshire, gave their thoughts at the cathedral named after him.

Video by Greg Davie, BBC News