1911 Encyclopædia Britannica (1911)
“ The countship of Hainaut remained united with that of Holland during the 14th and 15th centuries. It was under the counts William I. “the Good” (1304–1337) , whose daughter Philippa married Edward III. of England, and William II. (1337–1345) that the communes of Hainaut attained great political importance. Margaret, who succeeded her brother William II. in 1345, by her marriage with the emperor Louis IV. brought Hainaut with the rest of her dominions to the house of Wittelsbach. ”
