His wife, Joan Burroughs, was the daughter of writer Edgar Rice Burroughs, who also
created "Tarzan".
Pierce played Tarzan in the silent film Tarzan and the Golden Lion (1927) then went on to star in the Tarzan radio series. So he could either be seen and not heard in the role or heard and not seen, but never both.
Was radio's original Tarzan in program that featured his wife as Jane
and was produced in the early 1930s.