There’s no question that Marion Ross holds the title of one of America’s favorite TV moms, thanks to her portrayal of Marion Cunningham — lovingly referred to as “Mrs. C” by the Fonz — on Happy Days.

Marion Ross was one of the most beloved TV moms of the 1970s. The actress played matriarch Marion Cunningham, aka Mrs. C, for 11 seasons on the ABC sitcom Happy Days. Her co-stars on the hit series ...