A Spain, Lamport ya zo ga hankalin Marquis na Mancera, watakila ta hanyar 'yar'uwar Mancera wanda mijinta ya mutu a London kuma ya san malamin Lamport a can. A cikin 1633 ya shiga ɗaya daga cikin rundunonin Irish guda uku da ke tallafawa Mutanen Espanya kuma ya shiga cikin yaƙi da sojojin Sweden a cikin Netherlands na Spain. Yarjejeniyarsa a cikin
Yaƙin Nordlingen a 1634 ya jawo hankalin Count-Duke na Olivares, babban ministan Philip IV na Spain, wanda daga ƙarshe ya taimaka masa ya shiga aikin Sarki. A wannan lokacin ya yi amfani da sunansa zuwa Guillén Lombardo (a cikin Mexico na zamani wanda ake kira Guillén de Lampart).