I spent a while searching the London Gazette archives for more references, but could only find the notice you already posted. The search isn't very reliable because of OCR inaccuracies, but I tried many different keywords that should have brought up something if it was there.
The sources for the Ayshford Trafalgar Roll info were:
Prize Money: The ledger books of Bankers Christopher Cooke & Wm Cosway held by the Royal Naval Museum, Portsmouth.(records for only half the ships survive) together with ADM238/10 held at the National Archives.
Parliamentary Award: The ledger books of Bankers Christopher Cooke & James Halford held by the Royal Naval Museum, Portsmouth. (N.B. Records for only approximately half of the ships survive.)
Pamela & Derek Ayshford also provide some useful information on the distribution:
Quote:
The money was distributed some time after the Battle and the evidence we have been able to gather suggests that a significant number of men, or their relatives, never actually collected their share. It appears that the men/families had up to 4 months from the date of the distribution to claim their money, unclaimed money after this period went to Greenwich Hospital but it was possible to subsequently enter a claim and receive the money. For this reason it is difficult to say exactly the extent of non-claiming. Matters are further complicated by the fact that the two sources, ADM238/10 and the books of Christopher Cooke & Wm Cosway do not always show the same information about unclaimed money.
Where the information came from the books of the bankers it can be seen whether the man used an agent to collect his money, he, or a relative, signed for it or he made his mark. Unfortunately ADM238/10 appears to have been copied from the original bankers' records so this information is not available.
This seems consistent with the Prize Money notice in March 1807, but it seems strange we have not found notice of payment of the Parliamentary award.
Does the change of bankers (or were they agents?) tell us anything about the dates of distribution?
I have another different question about the Trafalgar prize money and parliamentary award. I have come across a man who deserted a few months after the battle, but who (according to the Ayshford Trafalgar Roll) received (and signed for) his prize money and award. I have always assumed that men who were marked as 'ran' lost their eligibility. Could a deserter regain his eligibility, and if so, what would he have to do to?