302 LISTS OF RULERS- This follows R. d'Abadal, Els Primers Comtes Catalans (B2-d), though dates in the
period 849-878 are approximate rather than secure. R.F.A. = Annales Regni Francorum;
A.B. = Annales Bertiniani; for these and the Vita Lludovici see R. Rau, Quellen zur
Karolingischen Reichsgeschichte, vols. I & II (Darmstadt: 1974, 1972).