I think you leave as is. Put data in 670. If 046 not present, put birth,death dates there.
I found from research the birth and death dates of n 82236641 ARN 1060906 Adam, William, ‡d active 1821-1861 . Can some remind me of the general PCC practice as to whether I should therefore change the authorized heading to “Adam, William, ‡d 1796-1881” or just add this form as a 400? Technically the active dates are not an error, though I think full dates are more useful.
I wouldn’t consider making such a change if he had been established as “Adam, William ‡c (Missionary)” or something of the sort (though I would still add the form with dates as a 400).
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Associate Professor of Bibliography
University of Oklahoma
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