Arthur Winslow is a fictional character from the novel "The Winslow Boy," written by Terence Rattigan. He is portrayed as a devoted father who fights for justice and honor for his son, Ronnie Winslow, who is accused of theft. Arthur's determination to clear his son's name drives the plot of the story, highlighting themes of integrity and family loyalty. Set in early 20th-century England, the play explores the impact of social class and public opinion on personal matters. Arthur's character embodies the struggle between personal values and societal expectations, making him a compelling figure in the narrative.