[2][3] His father József Grätzer was famous in Hungary as the "Puzzle King" ("rejtvénykirály").
George Grätzer received his PhD from Eötvös Loránd University in 1960 under the supervision of László Fuchs.
[4] In 1963 Grätzer and Schmidt published their theorem on the characterization of congruence lattices of algebras.
[5] In 1963 Grätzer left Hungary and became a professor at Pennsylvania State University.
His mathematical articles—over 260, all listed on Research Gate—are widely cited, and he has written several influential books.