I am not quite sure what is romance languages, are these chars in unicode blocks:
0100-017F Latin Extended-A
0180-024F Latin Extended-B
?
https://unicode-table.com/en/blocks/latin-extended-a/
https://unicode-table.com/en/blocks/latin-extended-b/
The two blocks are only the variant of the Latin chars.
It will be easy to complete in 12px.