Poore et al. (2009) give a suggested street plan of the town in late Saxon times (their figure 4) showing the then town wall with its north, west, south and east gates; at the north gate is the Saxon tower now associated with the church of St Michael at the North Gate, while the west gate is occupied by the apparently Saxon tower of St. George's, which is now believed to have subsequently been incorporated into the fabric of the later Norman castle.[10]