Complex sentence: She comes from one of Ireland's best-known musical families, her father being a well-known song collector and songwriter and her aunt, Néillí Ní Dhomhnaill having written some of Ireland's best known traditional songs.
Split into simpler sentences: She comes from one of Ireland's best-known musical families. Her father was a well-known song collector and songwriter and her aunt, Néillí Ní Dhomhnaill wrote some of Ireland's best known traditional songs.