 The priory was seized in 1414 by King Henry V of England along with a number of alien priories . In the first three centuries , there were several Priors appointed , sometimes with short tenures , but in 1500 Ralph Leonard was installed as Prior for life . However , within decades the Priory was abandoned , with evidence of Thomas de <unk> being the final Prior around 1560 . There is also evidence that the priory was allocated to John After in 1566 , who had also been appointed as the Dean of Guernsey . 
