Lynn, like the U.S., Germany has always been made up of STATES.
Until 1866, Hanover (in German: Hannover) was a German state.Its capital was the city of Hanover (Hannover).In 1866, Hanover was annexed by the German state of Prussia (in German: Preussen; capital: Berlin) and thereupon became what was to then remain until 1945 the Prussian province of Hanover.
Until 1945, Brunswick (in German: Braunschweig) was also a German state, a very small one.Its capital was the city of Brunswick (Braunschweig).
Following World War II and the break-up of the vast state of Prussia by the Allies, the Prussian province of Hanover, the state of Oldenburg, and the two very small states of Brunswick (Braunschweig) and Schaumburg-Lippe combined to form today's postwar German state of Lower Saxony (in German: Niedersachsen), with the city of Hanover (Hannover) as its capital.
There is no such town in Germany as a "Stuccombe" or anything resembling that.(What, by the way, is the U.D.C.???You have to be careful about using local American abbreviations in your queries.)
Birth, marriage and death records are not and never have been kept at either the national, state or provincial level in Germany.In Germany, such records are kept strictly at the local level.So before you can proceed, you are going to have to do additional research in Texas and find out exactly which city, town or village, whether in the state of Hanover or in the state of Brunswick, the Schulte family was from.
German churches in the U.S. tended to keep rather detailed records.So I would suggest as your next step trying to obtain copies of the church -- I emphasize CHURCH -- marriage records of those members of the Schulte family who were born in Germany and who got married in Texas.Their church marriage records would very likely name the exact town in Germany where they were born.The marriage records on file at the Victoria County Clerk's Office, or the County Clerk's Office in whichever county the marriages took place, would not include such detail.But the marriage records on file at the church where they got married would quite possibly name the exact town where they were born.(What was the Schulte family's religious denomination?)