The Franciscans had been introduced into Portugal by Dona Sancha, the daughter of Dom Sancho I., and houses were built for them by Dona Urraca, the wife of Dom Affonso II., at Lisbon and at Guimarães. Their church at Guimarães has been very much altered at different times, mostly in the eighteenth century, but the west door may very well belong to Dona Urraca's building. It has a drip-mould covered with closely set balls, and four orders of mouldings of which the second is a broad chamfer with a row of flat four-leaved flowers; the abacus is well moulded, but the capitals, which are somewhat bell-shaped, have the bell covered with rude animals or foliage which are still very romanesque in design. The entrance to the chapter-house is probably not much later in date: from the south walk of the simple but picturesque renaissance cloister a plain pointed doorway leads into the chapter-house, with, on either side, an opening of about equal size and shape. In these openings there stand three pairs of round coupled shafts with plain bases, rudely carved capitals and large square overhanging abaci, from which spring two pointed arches moulded only on the under side: resting on these, but connected with them or with the enclosing arch by no moulding or fillet, is a small circle, moulded like the arches only on one side and containing a small quatrefoil.[58] This is one of the earliest attempts at window tracery in the country, for the west window at Evora seems later, but like it, it shows that tracery was not really understood in the country, and that the Portuguese builders were not yet able so to unite the different parts as to make such a window one complete and beautiful whole. Indeed so unsuccessful are their attempts throughout that whenever, as at Batalha, a better result is seen, it may be put down to foreign influence. Much better as a rule are the round windows, mostly of the fourteenth century, but they are all very like one another, and are probably mostly derived from the same source, perhaps from one of the transept windows at Evora, or from the now empty circle over the west door at Lisbon. [Sidenote: São Francisco, Santarem.]