This
category is for organizations, places, companies, or other things that were founded or established in Wales in the 12th century.
11th c. ← Establishments in Wales in the 12th century→ 13th c.
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- 1140s establishments in Wales — 1140
- 1141
- 1142
- 1143
- 1144
- 1145
- 1146
- 1147
- 1148
- 1149
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- 1150s establishments in Wales — 1150
- 1151
- 1152
- 1153
- 1154
- 1155
- 1156
- 1157
- 1158
- 1159
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- 1160s establishments in Wales — 1160
- 1161
- 1162
- 1163
- 1164
- 1165
- 1166
- 1167
- 1168
- 1169
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- 1170s establishments in Wales — 1170
- 1171
- 1172
- 1173
- 1174
- 1175
- 1176
- 1177
- 1178
- 1179
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- 1180s establishments in Wales — 1180
- 1181
- 1182
- 1183
- 1184
- 1185
- 1186
- 1187
- 1188
- 1189
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- 1190s establishments in Wales — 1190
- 1191
- 1192
- 1193
- 1194
- 1195
- 1196
- 1197
- 1198
- 1199
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1200s establishments in Wales — 1200
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