Complex sentence: Healy's was one of five children born to Michael Healy was an Irish indentured servant and Mary Eliza Healy a former mulatto slave, under the laws of Georgia their union was illegal and all of their children technically slaves.
Split into simpler sentences: Healy's was one of five children born to Michael Healy, an Irish indentured servant, and Mary Eliza Healy, a former mulatto slave. Under the laws of Georgia their union was illegal and all of their children technically slaves.