Did you see this message in Dinamalar today? This person claims to belong to the Chozha lineage and that 98 years ago Chidambaram templeadministration was taken away from them by theDhikshithars.
HI dikshithar control was pre chola( 2nd round) documentation in devaram and other hymns are very early
thillai val anthanarku adiyaarkku adiyEn says sundara
if you look for other documentations the dikshithars are very well documented during anglo french wars, as well as re establishment of govindarajar during senji nayakar control.
earlier this pichavaram family used to claim that the temple key used to be deposited with them everynight.
definitely as the only zamin in that area they may have had a role but retracing their genes to the imperiel cholas who vanished in 1280 or so is very tough.
I remember reading one such news long ago. The man claimed to be a descendent of Karikala Chola's family. He was at Tanjore. He contested in elections also.