I have very little information on this, but..I am looking for Kollers in Texas. My grandfather is Raymond Koller. His father was possibly either George Koller(born 1899, died 1978) or Henry Koller(born 1902, 1984). I found both of them having died in Weimar. His mothers name is Christina.I dont know her original name, but she was born around 1906 so i figure one of them had to be her husband, and possibly his brother. They live or lived in Weimar.