Steinberg's (later simply Steinberg) was a Canadian supermarket chain led for much of its history by Sam Steinberg. A series of failed investments and the lack of a succession plan set off a power struggle within the family that led to the chain's demise. That struggle was immortalized in a documentary called "After Mr. Sam" which can be viewed at the National Film Board of Canada site:
http://www.nfb.ca/film/after_mr_sam
Steinberg's is an interesting story. They were so well known that in the province of Quebec, instead of saying: "I'm going to do my groceries" people would say "I'm going to do my Steinberg's".
Steinberg's was founded by Sam Steinberg.
A fun fact is that Sam's wife was named Helen.
Same names as Sam Walton and his wife Helen for Walmart.
Just for clarification...there was also an OH/KY/IN electronics store chain named Steinberg's, of no relation.
One location in Eastgate, OH...
(https://farm4.staticflickr.com/3835/14368155401_927d9c5710_b.jpg) (https://flic.kr/p/nTEy2g)Former Steinberg's, Eastgate, OH (https://flic.kr/p/nTEy2g) by harvestmanman (https://www.flickr.com/people/124303530@N08/), on Flickr
(https://farm3.staticflickr.com/2904/14369999582_b1e570310b_b.jpg) (https://flic.kr/p/nTQ1eu)Former Steinberg's, Eastgate, OH (https://flic.kr/p/nTQ1eu) by harvestmanman (https://www.flickr.com/people/124303530@N08/), on Flickr
...and one in Alexandria, KY.
The grand opening in June 1993, courtesy of the Kenton County Public Library...
(http://i.imgur.com/i0FoUnUh.jpg)
(https://farm8.staticflickr.com/7557/15143075494_dd366f1f15_b.jpg) (https://flic.kr/p/p59dLw)Former Aaron's/Steinberg's Electronics, Alexandria, KY (https://flic.kr/p/p59dLw) by harvestmanman (https://www.flickr.com/people/124303530@N08/), on Flickr