score:2
I find the names of two individuals reported to have accompanied Fernandez and Sola on this trip: Gomez and Bolcof.
From Bancroft (History of California pg 470):
On the San Carlos besides the canon sailed Sola and Lieutenant Manuel Gomez who left the artillery force of California to the command of Ramirez
Later in the chapter (pg. 479), while discussing foreigners in California, Bancroft drops another name:
Jose Bolcof the Russian was married this year to Candida Castro and possibly he was the Russian who accompanied the canonigo to Mexico
Bancroft seems hesitant in this connection, but it is repeated in a (more) recent publication Visit of the Russian Warship Apollo to California in 1822-1823(from Southern California Quarterly)
The visiting representative, the Canónigo Agustín Fernández de San Vicente, had departed Monterey on November 22 aboard the Imperial Mexican Man-of-War San Carlos, taking with him not only ex-gover- nor Pablo Vicente de Sola but apparently the principal Russian-Span- ish translator available to the Californians, José Antonio Bolcof (Osip Volkov)
and of course we are familiar with Bolcof from: