ID NEEDED PLEASE

Not sure what this flower is. It's growing in my wildflower section in the garden. I bought a wildflower mix but there's only one of this growing so i was thinking whether it could be a seed that's been scattered by a bird or the wind. Any ideas please!

 

Clarkia aka Godetia amoena

 

I was getting there, but the name change had thrown me.

 

Hi Sonya, this is Godetia .

Sane family as Clarkia ( so are Fuchsias ).

The photo below is Clarkia, a smaller double flower.

 

Thanks peeps, been looking on t'internet for ages but couldn't find anything. Just looked at RHS site and they reckon it's best in loam or sand so I'm surprised it's growing in the garden it being clay