▁to ▁the ▁court ▁of ▁Emperor ▁Charles ▁V . ▁He ▁informed ▁the ▁Ven et ian ▁Senate ▁that ▁he ▁would ▁leave ▁his ▁post ▁in ▁Pad ua , ▁which ▁prompt ed ▁Duke ▁Cos imo ▁I ▁de ' ▁Med ici ▁to ▁inv ite ▁him ▁to ▁move ▁to ▁the ▁expand ing ▁university ▁in ▁P isa , ▁which ▁he ▁decl ined . ▁V es al ius ▁took ▁up ▁the ▁offered ▁position ▁in ▁the ▁imperial ▁court , ▁where ▁he ▁had ▁to ▁deal ▁with ▁other ▁phys icians ▁who ▁mock ed ▁him ▁for ▁being ▁a ▁mere ▁bar ber ▁sur geon ▁instead ▁of ▁an ▁academic ▁working ▁on ▁the ▁respect ed ▁basis ▁of ▁theory . ▁ ▁In ▁the ▁ 1 5 4 0 s , ▁shortly ▁after ▁entering ▁in ▁service ▁of ▁the ▁em peror , ▁V es al ius ▁married ▁Anne ▁van ▁Ham me , ▁from ▁Vil vor de , ▁Belg ium . ▁They ▁had ▁one ▁daughter , ▁named ▁Anne , ▁who ▁died ▁in ▁ 1 5 8 8 . ▁ ▁Over ▁the ▁next ▁eleven ▁years ▁V es al ius ▁tra ve led ▁with ▁the ▁court , ▁tre ating ▁inj uries ▁caused ▁in ▁battle ▁or ▁tournament s , ▁performing ▁post mort ems , ▁admin ister ing ▁medic ation , ▁and ▁writing ▁private ▁letters ▁address ing ▁specific ▁medical ▁questions . ▁During ▁these ▁years ▁he ▁also ▁wrote ▁the ▁Ep ist le ▁on ▁the ▁China ▁root , ▁a ▁short ▁text ▁on ▁the ▁properties ▁of ▁a ▁medical ▁plant ▁whose ▁effic acy ▁he ▁doubt ed , ▁as ▁well ▁as ▁a ▁defense ▁of ▁his ▁an atom ical ▁find ings .