hi
i think we have the same william downie in our family he is my 3xgreat grandfather but i have hit a brick wall with himafter 1874.
i have a public tree under downie on ancestory that might help you with the family.he was a master mariner and if you look on llyods register it will tell you which ships he was on.anything i can help you with please post.his brother henry cross downie had a large chemist on sandhill newcastle .
lila