Sentence:  In our day Roy Basler's "The Lincoln Legend" and Lloyd Lewis' "Myths After Lincoln" have demonstrated that the most popular and admired of all American heroes has long ago been made superhistorical in myth; he has become, at least north of the Potomac, a <WSD>household deity</WSD>. 
Meaning of the word marked with <WSD> tags:  An icon or patron saint: a revered individual within a group.