Lorenzo Onofrio Colonna, VII. principe di Paliano - line numbering

Dear ADMINs!
I noticed an little difference with the line numbering on wiki.
(I know very well that it means nothing, and I don't want to start studying the whole line up to this level of detail.. just since passing through here there is a very good kind available (C).. ..someone say something now or who knows when we will talk about it again:)

to be clear the line is OK, correct, matches.. just a different numbering of a single number:

example
*Marcantonio V Colonna, VI. principe di Paliano
**Lorenzo Onofrio Colonna, VII. principe di Paliano (8th for wiki)
***Filippo II Colonna, VIII principe di Paliano (9th for wiki)
****etc