Henry V's religious outlook is well known: he was fiercely orthodox and the founder of two religious houses. The clergy who ministered to the king's spiritual needs have, however, received less direct attention. This chapter investigates the clerics closest to him, especially the members of his chapel royal, and asks how they were linked to Henry's overseas ambitions, and how the king's liturgical observance and spiritual support shaded into propaganda, because the private Christian was inseparable from the public ruler. It is hoped that, by bringing together information from diverse sources, it may be possible to observe a clearer picture of Henry's ecclesiastical milieu, and to suggest lines of further investigation. The chapter is divided into three parts: first, a prosopographical study of the named chaplains (especially those on the 1415 expedition) is undertaken, discussing such matters as recruitment, education, rewards and subsequent careers; the second part provides a more detailed description of those royal chaplains who were important composers; finally, the chapter asks whether any named member of Henry V's ecclesiastical milieu can plausibly be identified as the author of the anonymous Gesta Henrici Quinti.