Complex sentence: Duke Eugen was born at Oels, Lower Silesia, Kingdom of Prussia (now Oleśnica, Poland) first child of Duke Eugen of Württemberg (1758--1822) and his wife, Princess Louise of Stolberg-Gedern (1764--1834).
Split into simpler sentences: Duke Eugen was born at Oels, Lower Silesia, Kingdom of Prussia (now Oleśnica, Poland). He was the first child of Duke Eugen of Württemberg (1758--1822) and his wife Princess Louise of Stolberg-Gedern (1764--1834).