CORRECTION . Regarding Ship's Name . More work now suggests that the Snow in the above message was meant to classify the TYPE of ship that entered the port , Snow being a type of ship , like Frigate or Schooner were . The listing was something like Snow : Brittania . Master of ship [captain] name was Eyres , ship arrival date was May 18 1773 from Dublin to Philadelphia . Not to be confused with ship of same name [possibly the same ship] which also arrived in Philadelphia from Rotterdam on September 18 1773 with Palatine immigrants . Like everything this is a work in progress , and we will change it as different info is collected .