Well no the 13th century means the years of 1200 1299 and not the 1400s And as i said before the most contemporary picture should be chosen due it being the most valid There is a picture fresco of St Francis in Subiaco which is contemporary in terms of life time his time of refuge there which would be even better Other than that i can only recommend to use the most contemporary picture of any saint for any saint instead of a hundred years later imaginary projection A good example would be St Ambrose on wiki Thus my vote goes to St Francis and scenes from his life 13th century Bardi or the fresco at from Subiaco That s my two sesterces