In the year 970 the Scottish king Culen died, having been "killed (according to the Ulster Annals), by the Britons in open battle;" and in A.D. 994, his successor, Kenneth MacMalcolm, the founder of Brechin, was slain.[149] Constantine, the son of Culen, reigned for the next year and a half, and fell in a battle for the crown fought between him and Kenneth, the son of Malcolm I. The site of this battle was, according to most of our ancient authorities, on the Almond. There are two rivers of this name in Scotland, one in Perthshire and the other in the Lothians. George Chalmers places the site of the battle in which Constantine fell on the Almond in Perthshire; Fordun, Boece, and Buchanan place it on the Almond in the Lothians, upon the banks of which the Cat-stane stands. The battle was fought, to borrow the words of the Scotichronicon, "in Laudonia juxta ripam amnis Almond."[150] _The Chronicle of Melrose_ gives (p. 226) the "Avon"--the name of another large stream in the Lothians--as the river that was the site of the battle in question. Wynton (vol. i. p. 182) speaks of it as the "Awyne." Bishop Leslie transfers this same fight to the banks of the Annan in Dumfriesshire, describing it as having occurred during an invasion of Cumbria, "ad Annandiae amnis ostia."[151] Among the authorities who speak of this battle or of the fall of Constantine, some describe these events as having occurred at the source, others at the mouth of the Almond or Avon. Thus the ancient rhyming chronicle, cited in the Scotichronicon, gives the locality of Constantine's fall as "ad caput amnis Amond."[152] _The Chronicle of Melrose_, when entering the fall of "Constantinus Calwus," quotes the same lines, with such modifications as follows:[153]-- "Rex Constantinus, Culeno filius ortus, Ad caput amnis Avon ense peremtus erat, In Tegalere; regens uno rex et semis annis, Ipsum Kinedus Malcolomida ferit." Wyntown cites the two first of these Latin lines, changing, as I have said, the name of the river to Awyne, almost, apparently, for the purpose of getting a vernacular rhyme, and then himself tells us, that "At the Wattyr hed of Awyne, The King Gryme slwe this Constantyne."[154]