A friend of Hans von Marées, he designed the architectural setting for the painter's murals in the library of the German Marine Zoological Institute at Naples (1873).

[2] He spent a significant amount of time in Munich after 1889, executing a monumental fountain there, the Wittelsbacher Brunnen.

They were parents of the painter Eva, Elizabeth, sculptor Irene Georgii-Hildebrand, Sylvie, Bertele, and Catholic theologian Dietrich von Hildebrand.

In 1917, the American sculptor, conservative critic and author Lorado Taft, while bemoaning the direction the German sculpture was moving in, described Hildebrand as:a master of the old school and Florentine tradition, whose example has been a constant gospel of good taste and sanity.

Even today, when the whole world has gone after false gods, his influence continues to be felt and I wonder if the fact that in the midst of this revolution German sculpture, however fantastic, remains essentially sculpture, is not due largely to the life long precept and practice of this admirable representative of the craft.