According to most sources. In contrast, Klötzer names a Johann Adami as the uncle, but that appears unlikely (see, for example, this webpage on the Adami familyArchived October 26, 2007, at the Wayback Machine maintained by the Peterskirchhof cemetery in Frankfurt where Adamis and Bethmanns lie buried; clearly Jakob Adami was the uncle who made the bequest to his nephews and Johann was a cousin of Jakob.)
According to most sources. In contrast, Klötzer names a Johann Adami as the uncle, but that appears unlikely (see, for example, this webpage on the Adami familyArchived October 26, 2007, at the Wayback Machine maintained by the Peterskirchhof cemetery in Frankfurt where Adamis and Bethmanns lie buried; clearly Jakob Adami was the uncle who made the bequest to his nephews and Johann was a cousin of Jakob.)