I am reseaching the name Midegs in Latvia, so far little progress beyond my wife's father, she thinks the name may not originate from Latvia as its such an unusual name, any help or guidance would be appreciated, I ahve reseached in Uk and USA but first time in Europe

Have you tried the Latvian state archives? Also I would strongly recommend the blog and huge amount of information on this link www.celmina.com
Good luck