The small cathedral of St Aurea, also an early Renaissance structure, with Gothic windows, is by some ascribed to Meo del Caprina (1430-1501).
Of this group of people, among whom may be named the Yao, Yao Yin, Lanten, Meo, Musur (or Muhso) and Kaw, perhaps the best known and most like the Lao are the Lu - both names meaning originally "man" - who have in many cases adopted a form of Buddhism (flavoured strongly by their natural respect for local spirits as well as tattooing) and other relatively civilized customs, and have forsaken their wandering life among the hills for a more settled village existence.
Potassium, for example, yields peroxide, K202 or K204; sodium gives Na202; the barium-group metals, as well as magnesium, cadmium, zinc, lead, copper, are converted into their monoxides MeO.
Other tribes, whose presence is probably owing to immigration at remote or recent periods, are the Karens of the western frontier range, the Lu, Yao, Yao Yin, Meo and Musur of northern Siam.
Yin, Meo and Musur have Yunnanese characteristics, are met with in the Shan States north of Siam and in Yun-nan, and are supposed to have found their way into northern Siam since the beginning of the 19th century.