Complex sentence: Originally from Killorglin, Co. Kerry, Ireland, he emigrated to the United States in 1892, and made his home in Chicago and the Dorchester neighborhood of Boston, Massachusetts, and may have made a living as a bricklayer and/or electrician.
Split into simpler sentences: Originally from Killorglin, Co. Kerry, Ireland, he emigrated to the United States in 1892, making his home first in Chicago and then the Dorchester neighborhood of Boston, Massachusetts. He may have made a living as a bricklayer and/or electrician.