@knc1: True

. (That one looked weird as an email notification checked on my phone xD).
@mitra: The idea is to use fc-override.
tpl as a
template (eh!), to create a *new* config file in the conf.d folder (roughly following the same naming pattern as the rest, most likely something like 99-baskerville.conf). But, yeah, that's it

. As was mentioned before, just make sure you use the exact name of your font, the one you can see in the KUAL menu in your list of custom fonts.