Irish Potato Famine – Ireland’s holocaust The Great Famine of the late is the single most catastrophic event in Irish history. It caused a million deaths and forced a million people to emigrate. Ireland lost a quarter of its population.
Cause Of Great Potato Famine: Now DNA sequencing of dried leafs of the "Irish lumper" potato, the genome of the organism causing the blight has been found to be a single strain of a fungus like pathogen Phytophthora infestus
The 1841 census graded houses in Ireland into four classes. The lowest class consisted of mud and thatch cabins of a single windowless room like this. My ancestor, William Casey, May have lived in a house like this before he went to Scotland in about