Recorded in The Spirit of the Times which was published in Batavia, New York, William Allen advertised that he is taking daguerreotype miniatures at the Genesee House. In addition to taking likenesses he also is marking copies of portrait paintings and daguerreotypes and he has lockets of all sizes and prices constantly on hand. Advertisement ran from December 5, 1848 to January 2, 1849.
In searching through the photographic directories and histories no other William Allen has been located. As discussed in the post dated February 9 under Mr. Allen. It is possible that William A. Allen who was in Brooklyn at the time is the same person but at this time it is only speculation without more information.