A territory named for this person was consolidated at the expense of the Aesti under Lembitu and the Semigallians under Viestards. For 10 points each:
[10m] Albert of Buxhoeveden (“books-HO-vuh-din”) promoted the use of what person’s name for the Sword Brothers’ state in Livonia? John II Casimir appointed this person monarch of Poland via the Lwów Oath.
ANSWER: Virgin Mary [or the Madonna; accept Terra Mariana]
[10e] As part of his campaigns to establish the Terra Mariana in Livonia, Albert founded this future Hanseatic city, a present-day Baltic capital on the Daugava River.
ANSWER: Riga
[10h] A medieval merchant’s guild based in Riga, the Brotherhood of Blackheads, legendarily adopted Mary as their patron saint after defending Tallinn during this 1343 revolt by indigenous Estonian groups like the Oeselia.
ANSWER: Saint George’s Night Uprising [or Jüriöö ülestõus]
<JB, European History>