BUCKINGHAM (Buckinghamshire). Party per pale sable and gules, a swan with wings expanded and inverted argent, ducally gorged or.
The swan is almost universally quoted as chained, but it does not so appear in the visitation books, though Vincent gives it with the chain. Moreover, the colours are usually quoted gules and sable, and the swan is shown with the wings endorsed.
Original Source bookofpublicarms00foxd_djvu.txt near line 4910.