a Greenville landmark since 1952 Founded by Joseph Janssen Sr. in the fall of 1952, Janssen’s has become an institution in our community. We offer the finest foods and superb customer service, with the highest attention to detail in everything we do. ...
Janssen’s Supermarket opens in Greenville, DE in the Shield Suburban Shops. 1961 Joseph W. Janssen, Jr. joins Janssen’s Supermarket full-time. 1984 Eileen Janssen joins her husband working at Janssen’s Supermarket after teaching at Alexis I. du Pont High School for 28 years. ...