He crossed the Atlantic Ocean with his parents, Jean Michel and Suzanne Rochon, and his siblings, Pierre, Margarita and Michel via the ship John J. Boyd, arriving in New York on 15 February 1856. His given name is listed as "Peter" on the ship manifest. It is uncertain how many of the children actually made the overland journey. Though two separate promissory notes in his mother's name seem to indicate that three of the children survived the journey, most likely Elizabeth, Pierre and Margarite.
Alternate spelling of surname: "Roshon."