The surname Corpus can be traced back to Anglo-Saxons when they ruled Britain around 600 A.D. Originally, they were pagans and did not have last names, but when priests traveled the country converting pagans into Christians, ta da!hence surname Corpus was created. latin was the language of the priests. Corpus is latin for body and latin language has been around since roughly 40 B.C.As for American's with surname Corpus, it was the same process.Spanish missionaries went around the country trying to convert the "pagans" into Christian-loving people.Since they also did not have surnames, there you go! Corpus was their given surname.As for the family crest.If there is one, it would belong to the Anglo-Saxons, and not to those whose lineage began in America, particularly native-americans or hispanics.If you also notice Philipinos have hispance/latin surnames due to Christian missionaries doing the same thing back in the day.