I have more information now about my ROSSI family :
EfremROSSI was born in 1851. His parents were Francesco ROSSI and Domenica ZANOL from San Tomaso Agordino, Veneto. He had two sisters who went to the USA. They were Teresa ROSSI, born in 1860 and Eligia ROSSI, born in 1870. When Eligia went to the USA in 1901 she went to her sister Teresa in Hurley, Wisconsin. It said in the family that they were single when they left. They maybe got married later.