53 works carry all of these threads.
12th century
10th–12th century
anonymous · ca. 1000 - ca. 1200
ca. 1180–1210
probably 8th–12th century
ca. 1150–60
9th–15th century
anonymous · 1050 - 1175
12th–13th century
anonymous · ca. 900 - ca. 1100
