Chief Justice John Marshall (1801-1835) expanded judicial powers the most, and answers argue that his contributions to the "concept of judicial review" (one answer argued that he created the concept) and establishment of a unified court opinion led to a Supreme Court.
My mistress' eyes are nothing like the sun; Coral is far more red than her lips' red; If snow be white, why then her breasts are dun; If hairs be wires, black wires grow on her head.