The Cardinal Ritter house is on the southwest corner of 13th and Oak, only two short blocks away from where I live on Spring Street.
From the web site documenting the house's history and current renovation:
"The house saw a generation of Ritter children grow up to be three doctors, a nun, a businessman, and, of course, the youngest (and only Hoosier) Cardinal in Catholic church history."
Here's the site: http://www.cardinalritterhouse.org/
Interestingly, across the street on the northeast corner of 13th and Oak, once stood the house where a favorite customer of mine ran the Street Level coffee house from 1977 through 1980. Until recently, I didn't know it existed. There's a brief memorial and photos here: