Before revision: In the rise of European towns in the 12th and 13th century , the patriciate, a limited group of families with a special constitutional position, in Henri Pirenne's view,Pirenne, Medieval Cities: Their Origins and the Revival of Trade (1927) offers a late, developed view of the "Pirenne thesis" with origins in articles on the origins of urban constitutions in 1895: see Henri Pirenne#Pirenne Thesis.
After revision: In the rise of European towns in the 12th and 13th centuries , the patriciate, a limited group of families with a special constitutional position, in Henri Pirenne's view,Pirenne, Medieval Cities: Their Origins and the Revival of Trade (1927) offers a late, developed view of the "Pirenne thesis" with origins in articles on the origins of urban constitutions in 1895: see Henri Pirenne#Pirenne Thesis.