Perhaps it would be relevant to note in this context that there were two great scholars named Vācaspati-miśra who were separated from each other by about five centuries. See Aklujkar, Ashok. 1998. "Våcaspati-mißra's Tattva-samikΩå and the last two verses in Yukti-d^pikå manuscripts." Adyar Library Bulletin 62: 125-165.