Complex sentence: The first was Pierre Séguier (1588-1672), who bought 14 leaves which, known later as Fragmenta Coisliniana, and became a part part of the Fonds Coislin, since 1795 until now held by the Bibliothèque nationale de France.
Split into simpler sentences: The first was Pierre Séguier (1588-1672), who bought 14 leaves which, known later as Fragmenta Coisliniana, and became a part part of the Fonds Coislin. Since 1795 until now held by the Bibliothèque nationale de France.