Non-PRO Spanish to English Art/Literary Poetry & Literature

Hello all, I have begun a personal project of translating some Spanish novels from the late 18th century and the early 19th century. Many, but not all, have a medieval setting; however, even those which do not have such a setting often use still use the reverential or archaic "vos" with the conjugations for "vosotros," despite speaking to only one person. This usage also seems to be without any clear class distinctions (which you will see are very important in a moment). I know that other posts have been made about this linguistic feature, but none have addressed the concerns I have below.

As you can guess, I have found this to be a great challenge in this work. My first reaction was to use the archaic English "thou." However, despite the fact that Biblical language has made us think of "thou" as full of deference on account of it being used to address God, it was actually the informal pronoun, and English writers of similarly medieval-themed novels from the above mentioned periods (when "thou" had fallen out of everyday use among all except people in very remote English and Scottish villages, as well as Quakers) seemed to have nevertheless been aware of this and used "thou/thee" and "ye/you" accordingly, i.e., if I recall correctly, a servant would never call his master "thou" (very disrespectful and insolent in that time) in such a work, nor would a knight call a peasant "ye."

Thus, my second reaction is to translate "vos" as "thee/thou" when a social superior is addressing an inferior, and to translate "vos" to "ye/you" when the social hierarchy relationship is reversed, as that would retain the archaism inherent in vos while largely putting it in line with the prevailing usage in medieval-themed English novels written at the same time mentioned above. However, this also makes me think that maybe I am adding something that is not there, since the reverential/archaic "vos" form does not seem to be restricted to talking to someone either above or below the speaker's station. For example, in one such novel, a traveling knight has a long conversation with a local villager and they both call each other "vos."

So, with regard to my commentary, which is the better option? Remember that my approach is to try to balance 1) making such novels read like comparable English novels of the same period and 2) being true to the text. Also, if there is a third option, I would be more than happy to hear about it. Thank you so much for your time!