“If you married the wrong guy, you were in life-long trouble.” So says “The Gilded Age” creator Julian Fellowes, summing up one of the many thematic undercurrents of the historical series’s third season, which airs on HBO this June.

“If you married the wrong guy, you were in life-long trouble.” So says “The Gilded Age” creator Julian Fellowes, summing up one of the many thematic undercurrents of the historical series’s third season, which airs on HBO this June.