He was the second son of a Chancery Councillor, who originally wanted him to pursue a legal career, but he displayed an early aptitude for painting.
In 1818, he began his studies at the Academy of Fine Arts, Munich, under Johann Peter von Langer,[1] the first Director.
However, Weller decided that he was more interested in daily life and nature than grand panoramas.
For his detailed and meticulous painting technique, he took Peter von Hess as a model.
He travelled to Rome in 1825 with his friend, the landscape painter Ernst Fries and was admitted to the Accademia di San Luca.