Looking for info regarding the Johnson/Johnston family who came to the US in 1948 abourd the "Diadem" bound for New York via Liverpool. Records show they were coming from Ireland. John b. abt 1803 & Mary Ann b. abt 1808. Children: Angelina; Sophia; Richard; William; John R & Cornelia (born at sea). Can't find anything Prior to thier voyage nor afterwards until John R (my grt grt GF) lived in California in 1900.