The adjective Bayesian itself dates to the 1950s;  the derived Bayesianism, neo-Bayesianism is of 1960s coinage. In the objectivist stream, the statistical analysis depends on only the model assumed and the data analysed.
The term "Bayesian" was coined in the 1950s; its related concept, "neo-Bayesianism," came into use in the 1960s. In the objectivist school of thought, statistical analysis is solely based on the model and data provided.