▁army ▁to ▁France ▁helped ▁to ▁ ▁resolve ▁the ▁crisis . ▁Pr eston ▁and ▁G orm an ston ▁were ▁soon ▁released ▁and ▁restored ▁to ▁favour : ▁Ot way - R uth ven ▁con cludes ▁that ▁they ▁are ▁unlikely ▁to ▁have ▁been ▁engaged ▁in ▁a ▁tre ason able ▁consp i racy , ▁and ▁were ▁ ▁simply ▁opposed ▁to ▁what ▁they ▁saw ▁as ▁Sh rew s bury ' s ▁high - hand ed ▁regime . ▁ ▁Sie ge ▁of ▁Rou en ▁ ▁In ▁ 1 4 1 8 – 1 4 1 9 ▁Thomas ▁led ▁a ▁force ▁to ▁fight ▁with ▁Henry ▁V ▁of ▁England ▁at ▁the ▁Sie ge ▁of ▁Rou en ; ▁French ▁and ▁English ▁sources ▁agree ▁that ▁he ▁was ▁present ▁although ▁they ▁differ ▁greatly ▁on ▁the ▁size ▁of ▁his ▁force ; ▁the ▁best ▁estimate ▁is ▁about ▁ 7 0 0 . ▁According ▁to ▁one ▁description ▁there ▁were : ▁ ▁" e igh teen ▁score ▁men ▁with ▁red ▁shield s ▁and ▁eigh teen ▁score ▁with ▁pure ▁white ▁shield s ; ▁ ▁and ▁not ▁often ▁has ▁so ▁numerous ▁and ▁well - born ▁a ▁host ▁emb ark ed ▁from ▁England ". ▁ ▁He ▁is ▁said ▁to ▁have ▁given ▁good ▁service ▁ ▁to ▁the ▁English ▁cause ▁in ▁France , ▁and ▁died ▁there ▁in ▁ 1 4 2 0 . ▁ ▁Character ▁ ▁O ' F lan agan ▁calls ▁Thomas ▁a ▁man ▁of ▁great ▁courage ▁and ▁considerable ▁administrative ▁ability , ▁who ▁over c ame ▁what ▁were ▁then ▁the ▁serious ▁draw back s ▁of ▁il leg it im acy ▁and ▁physical