Complex sentence: Acknowledged as sovereign in Holland and Hainaut, Jacqueline was opposed by her uncle John of Bavaria, bishop of Liege, but gained the support of the Hoek faction in Holland (the aristocratic faction in the County).
Split into simpler sentences: Acknowledged as sovereign in Holland and Hainaut, Jacqueline was opposed by her uncle John of Bavaria, bishop of Liege. She had the support of the Hoek faction in Holland (the aristocratic faction in the County).