The Princess of Wales' Fancy

From Lowes' Ball-Conductor and Assembly Guide:

Reel and set; after which pousette one couple round the other. (this may be danced to any tune of three parts.)

William IV became king of England in June of 1830. If the dance were written before that, then the Princess of Wales would have been his wife, Adelaide of Saxe-Meiningen, but although she was heir apparent, I don't believe Victoria was formally invested with the title.

This appears to be a standard reel of four, with a poussette tacked on at the end.

The term "poussette" is ambiguous in this period. It might mean the traditional English push-out, pull-back poussette, or it might mean that the couples waltzed around each either. I don't think the waltz poussette would have been adapted to reel music this early, so I think the traditional poussette more likely, but I could be wrong.

The Lowes describe the reel of four earlier in their work:

Before commencing the Reel of Four, the Gentlemen place their partners upon the opposite sides of the room, or at the ends, and stand either before or beside them; if before them, all four mus begin at once; but if otherwise, the Ladies ought to begin first; each person describes the figure of eight, and the Gentlemen set to the Ladies alternately.

Unfortunately this description is misleading. The figure of a reel for four people is not a figure eight, it's a figure eight with an extra loop. The Fletts kindly point this out.

The Fletts also mention that the reel should be performed "giving shoulders", that is when passing someone of the opposite sex in the reel the shoulder closest to that person should lead (so the dancers are almost back to back), while when passing someone of the same sex the outside shoulder should lead (so the dancers are almost face to face).

the Gentlemen set to the Ladies alternately means that the gentlemen finish the reel in each other's places so they are setting to the woman who is not their partner (at least the first time through, they are back with partners after the second time).

The Lowes seem to suggest that only the Gentlemen set, but the Fletts say all four dancers do.