noted one thing. a son had not succeeded his father in tanjore for over 70 years?( a guess) after kandarathithhar, his brother sundara, after him his cousin, uthama, and after him nephew rrc.
and sundara, uthama and rrc had rather long reigns.
there was a similar period in delhui where for over hundred years no son followed a father
ghazni followed by kutbudin( slave) kutbudin followed by iltamish( slave and son in law0 iltamish followed by razia (daughter) razia followed by her brother the brother followed by balban (slave) and so on i guess i got carried away by that. venketesh