Ernest Greenwood spent his formative years in Yorkshire, England, before immigrating to the United States in 1910. He established a career in education, teaching in public schools and later holding administrative roles, including headmaster and chairman of the board of trustees. Greenwood's professional experience also included significant contributions to vocational education and workforce development during wartime. He transitioned into public service, running for local office and serving briefly in the House of Representatives. His career reflects a commitment to education and public service.

Ernest Greenwood's political identity is marked by a blend of vocational education advocacy and local governance engagement, revealing an ideologically localized approach. His support for public education funding and infrastructure improvements contrasts with his unsuccessful bids for higher office, suggesting a calculated focus on regional impact. Greenwood's involvement in military resource committees during wartime underscores a dedication to practical, localized problem-solving, yet his policy stances often intersect with opposing factions, hinting at a strategic balancing act.