This family is one Baltic Germany family. The frist Oom was arrived at Reval /Tallinn in 1612 and he is1. Hans Oom,(Ohm) b.1597 Lunden, Schleswig-Holstein, Germany d.1664 Reval /Tallinn . His child 2.Hans Oom b. 1670 Sommerphalen/Sömmerpalu d.1672 Reval /Tallinn, m.Anna Eberschild 3.Wendula m. Anton thor Helle 3.Gerthruda m. Barthold v.Strahlborn 3.Anna m. 3.Elizabeth m. 3.Adolf I Oom (Hans Adolf ) b.1670 d.1753 4.Hinrich Oom b.1719-Russian Branch 4.Friedrich Oom b.1720-Portuguese Branch