Adferiad yr 19 ganrif
19th Century Restoration
Yn ystod y bedwaredd ganrif ar bymtheg cynyddodd poblogaeth Bangor yn gyflym, a gwnaed sawl ymdrech i ddarparu mwy o le i eistedd yn yr Eglwys Gadeiriol a darparu ar gyfer mewnfudwyr Lloegr hefyd. Comisiynodd Dean James Vincent (1862-76) Syr George Gilbert Scott, prif bensaer y dydd, ar gyfer adferiad radical. Disgrifiodd Scott ei gynllun fel gwyro oddi wrth y driniaeth geidwadol yr oedd fel arfer yn ei argymell.
Ar ei gyngor penderfynwyd adfer neu ailadeiladu’n rhannol y quire, transepts a’r bennoddy ‘yn y fath arddull ag a nodir gan eu ychydig ddarnau sy’n weddill’. Daeth o hyd i seiliau digonol o fwâu a phriflythrennau croesi'r bedwaredd ganrif ar ddeg i ailadeiladu'r groesfan; darnau digonol o fframiau ffenestri a rhwyllwaith i ail-greu ffenestri transept dydd yr Esgob Anian; a darnau digonol o waith maen i'w alluogi i ail-greu bwtresi'r bedwaredd ganrif ar ddeg ar y transept deheuol a'r pen dwyreiniol.
Llwyddodd Scott i ddarparu dim ond bonyn twr, yn codi tua 18 modfedd uwchben crib y to, yn y gobaith y byddai arian i gwblhau'r dyluniad ar gael yn ddiweddarach. Pan ddarparwyd arian yn y pen draw yn y 1950au, roedd peirianwyr yn amau a ellid adeiladu hyd yn oed meindwr wedi'i addasu, oherwydd ymsuddiant.
Ym 1966 - 67 gorffennwyd bonyn twr canolog Scott gyda bylchfuriau, cap pyramidical a cheiliog tywydd tal.
During the nineteenth century the population of Bangor increased rapidly, and several attempts were made to provide more seating capacity in the Cathedral and also cater for the English immigrants. Dean James Vincent (1862-76) commissioned Sir George Gilbert Scott, the leading architect of the day, for a radical restoration. Scott described his scheme as a departure from the conservative treatment he usually advocated.
On his advice it was decided to restore or partially reconstruct the quire, transepts and chapter house ‘in such a style as is indicated by their few remaining fragments’. He found sufficient bases of the fourteenth century crossing arches and capitals to reconstruct the crossing; sufficient fragments of window frames and tracery to reconstruct the transept windows of Bishop Anian’s day; and sufficient fragments of masonry to enable him to reconstruct the fourteenth century buttresses on the south transept and east end.
Scott was able to provide only the stump of a tower, rising about 18 inches above the ridge of the roof, in the hope that money to complete the design would become available at a later date. When money was eventually provided in the 1950s, engineers doubted whether even a modified spire could be built, owing to subsidence.
In 1966 – 67 the stump of Scott’s central tower was finished off with battlements, a pyramidical cap and a tall weather cock.