alphard

Among the various recipes which the Ménagier gives to this intent are two charms; for instance, 'when a horse has glanders, you must say to him these three words, with three paternosters: _abgla_, _abgly_, _alphard_, _asy_,

Medieval People Eileen Edna Power 1914

Thank you littlem for telling me regulu’s blacks middle name, which is alphard hence R.A.b.

Just Finished Reading Harry Potter and the Half-Blood Prince 2005