Viking pirates and Christian princes. Dynasty, religion, and empire in the north Atlantic. By Benjamin Hudson. Pp. xiv+278 incl. 4 figs and 9 maps. Oxford: Oxford University Press, 2005. £22.50. 13 978 0 19 516237 0; 0 19 516237 4 - Shepard, Jonathan (The journal of ecclesiastical history, 2008)