Harpgirl. Quite inaccurate. See Jeremy Barlow's 'The Complete Country Dance Tunes from Playford's Dancing Master', 1985, for reprint of all the tunes, and their dates and edition #, that appeared in all editions of Vol. 1 of 'The Dancing Master', 1651 - c 1728 (but that's only for Vol. 1). My file CNTYDAN1 lists all the tunes in the last edition of vol. 2 and 3, but I don't know when these tunes first appeared, and some tunes originally in volume 1 were later moved to Vol. 2. I have two facsimile reprints (separate publications) of the 1651 edition, and there's no tune in that with 'beaver' in the title.