The Famine in Mayo: A Portrait from Contemporary Sources, 1845–1850 by Ivor Hamrock is a documentary collection published by Mayo County Council that reconstructs the impact of the Great Famine through original contemporary material rather than later historical interpretation.

The book draws extensively on newspapers, official government reports, eyewitness testimonies, relief records, and local correspondence to build a detailed picture of how the famine unfolded in County Mayo—one of the worst-affected regions in Ireland.

Covering the years 1845–1850, the work presents material as it originally appeared, preserving the language, tone, and spelling of the time. It includes accounts of widespread hardship across towns, villages, and rural townlands, showing how famine conditions varied locally but consistently resulted in hunger, displacement, and death.

Key themes include:

• The outbreak and spread of potato blight in Mayo
• Mass evictions and destruction of rural housing
• Workhouses, relief schemes, and government response
• Eyewitness accounts of starvation and disease
• Emigration and population collapse
• Role of landlords, agents, and local authorities
• Social breakdown and community survival strategies
• Daily life during famine conditions in rural Ireland

A major strength of the book is its primary-source approach, allowing readers to experience the famine through the voices of those who lived through it. This method provides a raw and often stark portrayal of suffering, while also documenting administrative responses and public commentary from the period.

Rather than offering a single narrative interpretation, the compilation allows contrasting perspectives to emerge, revealing tensions between official reports and lived experience. It also highlights how famine conditions were recorded and reported differently across newspapers, government documents, and local accounts.

The result is both a historical archive and a regional study, making it a valuable resource for understanding how the Great Famine affected County Mayo specifically—one of the counties with the highest mortality and emigration rates.

This work is widely used in Irish local history research, famine studies, genealogy, and archival studies, providing an essential reference for understanding the human and administrative dimensions of the Irish Famine at ground level.