a life of art and teaching robert jenkins onderdonk, an american painter and art teacher, left an indelible mark on the texas art scene. born on january 16, 1852, in the united states, onderdonk's life was a testament to his passion for both creating and teaching art. early life and education onderdonk studied under the tutelage of william merritt chase at the shinnecock hills summer school of art in long island. this foundational educ…