Prince Carl (Karl) of Solms-Braunfels was a German prince and military officer in both the Austrian army and the cavalry of the Grand Duchy of Hesse. As commissioner general of the Adelsverein, he spearheaded the establishment of colonies of German immigrants in Texas. Prince Solms named New Braunfels, Texas, in honor of his homeland.

The Fisher–Miller Land Grant was part of an early colonization effort of the Republic of Texas. Its 3,878,000 acres covered 5,000 square miles (13,000 km2) between the Llano River and Colorado River. Originally granted to Henry Francis Fisher and Burchard Miller, the grant was sold to the German colonization company of Adelsverein. Very few colonizations resulted from the land grant, as most settlers preferred Fredericksburg and New Braunfels, which lay outside the land grant boundaries. A granite monument located near Lookout Mountain in Burnet County summarizes the history and importance of the Fisher-Miller Land Grant and was designated as a Recorded Texas Historic Landmark in 1964, Marker number 9438.