| 1077 | | St. Albans Cathedral building begins
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| | Work began on St. Albans Cathedral. (More Information to follow) |
| 1195 - 1214 | Alteration to the West End
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| | Modifications to the west end of the church were undertaken under the direction of the abbot John de Cella. The plan was to add an extra three bays to the existing structure. Progress was slow due to mismanagement of the funds and when John de Cella died not much progress had been achieved. The work was completed under the direction of the next abbot, William of Trumpington. |
| 1250 | Qtr 4 | Earthquake shakes St. Albans Abbey
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| | Matthew Paris, the medieval historian, reported that an earthquake shook and damaged the church at St. Albans. Earthquakes are unusual in this area. |
| 1257 | | Building work at St. Albans
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| | Sections of the Norman apses at the eastern end of the church were damaged during the earthquake of 1250. It was decided to knock these down and replace them with a plan based on work that had been carried out at Westminster Abbey. The work took over sixty years to complete due to periods when funds were lacking. |
| 1323 | | Sections of St. Alban collapses
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| | Parts of the ceiling of the church collapsed when several columns in the nave fell down. |