The Church Fathers · c. 703–728
The Calendar of Willibrord
Willibrord and his circle · c. 658–739
What it is
A working liturgical calendar from a missionary bishop's own book, with a marginal note in his hand recording the year of his consecration.
Why it lasted
One of the very few surviving manuscripts that a named eighth-century missionary demonstrably used and annotated himself.
Where to read it
This work is in the public domain and can be read in full, free, at the archives below. The Library catalogues it; it does not host the text.
These open a search on each archive rather than a direct link, which is the honest way to point at an edition nobody here has checked line by line.
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