This article examines cross-border inheritance transfers between the United States, Germany, and Russia between the 1840s and the late 1980s. These transfers were not only characterized by private considerations and kinship networks but were also strongly intertwined with national and international political developments. This article argues that the history of transnational inheritance transfers since the 19th century can be subdivided into three distinct periods. The first period, from the mid-19th century to 1914, witnessed the gradual development and expansion of professional networks and legal agreements designed to facilitate cross-border estate transfers. By contrast, the second period, from World War I and the October Revolution of 1917 through the late 1960s, was a time of unprecedented global disruption. Unlike the half-century before World War I, governments and probate courts complicated, delayed, and prevented inheritance transfers across state borders due to military and ideological conflicts. During the third period, beginning in the 1960s, governments, international organizations, lawyers, and families resumed efforts to create structures that would legally protect and enable cross-border estate transfers in an increasingly globalized world.