I can't find where you got that in a row part from. From what I found it only states that 3 will at some point appear during the period that heavenly court doesn't have a lord. Of course this would mean you are correct, unless I bring up the order in which the venerables appeared. After Star constellation A total of 5 demon venerables existed. 2 of which existed before red lotus in the Olden Antiquity Era. This leaves him as 3rd or 4th depending on if red lotus or thieving heaven came first. Unless you can find something confirming that red lotus came first you are wrong.