Which district is this market town near the Erseby Manor of Barons Willoughby of Eresby located? 
Brook, Heywood:  It was the seat of Robert Willoughby, 1st Baron Willoughby de Broke (c.1452-1502), KG, an important supporter of King Henry VII, whose title unusually incorporates the name of his seat, in order to differentiate him from his ancestors Barons Willoughby of Eresby, seated at Eresby Manor near Spilsby in Lincolnshire.
i don't know