Dedication of Churches

In Paul Turner's Blog by Paul Turner

Q: I am aware that there is a date each year for the Anniversary of the Dedication of Churches whose Dates of Dedication are Unknown. 

We have just discovered what appears to be a made up date for the dedication of the Cathedral in the Ordo. We are unable to find any records indicating an actual date of dedication. 

If the Bishop wishes to celebrate the anniversary of the dedication of the Cathedral, should the anniversary of the dedication published in the Ordo  remain the date until more compelling evidence of a date of dedication is found? 

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A: The bishop should celebrate the anniversary of that cathedral on the traditional date published in the Ordo until other evidence is produced. As you know, it is a solemnity at the cathedral and a feast day in every other parish in the diocese, affecting how Catholics celebrate the Mass and the Liturgy of the Hours that day.