Johann Hieronymus Weller was the son of Rupert or Robert Weller and Margaretha Helman. He was born in 1684 in Germany. He married Anna Juliana Cons/Kunz/Cuntz, the daughter of Jacob Kunz and Anna Catharina Heyl, and they immigrated to New York in 1710. Their children included Johan Jacob, Anna Catrin, Ludwig, Johan Hendrik, Frederick/Johann, Hieronymus Adam, Willem/William, Heinrich/Johann and Johannes. Johan (usually called Hieronimus) married Anna Maria Homfin after the death of his first wife. Descendants lived in California, Virginia, New Jersey and Michigan.