Arthur is quite the bougie name.
I do not know much about Johnson, or Sakaja, but Arthur sounds like a name one would give a son they wished would grow into a cultured, well-mannered and educated good-English-spewing man.
A young Arthur would be the boy who wears white shirts and shorts and a hat, and whose face would scrunch up at the mere sight of chicken poop.
Such habits would presumably follow him into adulthood.