GrandPa's or GrandPa Pidgeon's was a discount store founded in 1954 by Tom and Mildred Pidgeon, spreading across the midwest from its Bridgeton, Missouri (located in St. Louis County) origins, which remained truly "discount", when most others like Venture, Kmart and Target gradually raised prices in order to finance a more attractive layout and broader range of merchandise.

He sold his company, Pidgeon Vitrified China in 1953 when he foresaw the impact plastic was having on the lower end dinnerware market.

The first Grandpa Pidgeon's was opened in February 1954 and managed by his son-in-law, John (Jack) Holley, born in 1924 in Galena, Kansas.

Over the next decade, Holley subsequently opened several other stores in the St. Louis metropolitan area, before buying the company outright from his father-in-law in 1968.

Holley formed the Gramex Corporation in 1970, which also oversaw such companies as Forsythe Computers and Omni Sports, which was forced to close due to increasing competition.