Fighting continued during the winter in Yorkshire, as Royalist leader Newcastle tried to secure a landing place for an arms shipment from the Dutch Republic. With insufficient troops to hold the entire area, his task was complicated by Parliamentarian forces under Lord Fairfax and his son Sir Thomas, which retained key towns like Hull and Leeds. The weapons convoy carrying Henrietta Maria finally managed to land at Bridlington in late February; on 4 June she left York escorted by 5,000 cavalry, arriving in Oxford in mid-July.