No I dont think its Royal Doulton, it does not say that on the bottom.
And yes, that painting is fantastic. I will take another photo of it tomorrow, and hopefully wont need the flash, so that big bright spot wont be on the picture.
My cousins name is Terry Johnstone. There are quite a few articles mentioning him on the web.
We were all very close when we were kids. Terry is the eldest of 8 children of my mums sister, Aunty Ivy. Her husband, walked out on her when her youngest was only a few months old. As kids there was never any mention of their aboriginal heritage, which came from their father. Terry had a troubled life, and suffered from alcoholism, and it was the Aboriginal contacts that he made, help him stop drinking, and gave him an opportunity to do art....and the rest is history. We are all very proud of him.