Complex sentence: Mireille Mathieu was born and raised in Avignon, Vaucluse département, France, the eldest daughter of a family of 14; her youngest brother was born after she had moved to Paris.
Split into simpler sentences: Mireille Mathieu was born and raised in Avignon, Vaucluse département, France, the eldest daughter of a family of fourteen children. The youngest brother born after she had moved to Paris.