by John Marshall Harlan, Monongahela National Bank of Brownsville v…
“ Bank, 102 U.S. 163, we held that in actions in which judgment may be rendered for or against an executor, administrator, or guardian, it is no objection to the competency of the witness that he is interested in the issue to be tried, because, in such cases, the statute excluded only parties to the record; that is, those who, according to the established rules of pleading and evidence, are parties to the issue. ”
