Seeking Marie Kathryn Schmidt

The family of Marie K. Schmidt and her husband Frederich Benzel are seeking conclusive information about Marie. Marie was born on 2 August 1889 in the Volga area of Russia. Her family members have been located in the Volga villages of Kolb and possibly Messer. Her name is common among the Germans from Russia, and it has proven difficult to precisely identify her and her parents. The family of Marie and her descendants were most likely early settlers in the Volga area. Marie married into the Benzel family, and they are among the earliest of German settlers. The village of Kautz was the first family village, and individuals relocated to daughter colonies from there. My goal is to identify Marie K. Schmidt's parents prior to an upcoming family reunion. Thank you in advance for assistance in solving this challenge. Dee Hert