Sakthan Thampuran unified the 10 temples situated
around Vadakkunnathan temple and organized the celebration of Thrissur Pooram as
a mass festival. Sakthan Thampuran ordained these temples into two groups,
Western group and Eastern group. The Western group as Thiruvambady consisting of
Kanimangalam, Laloor, Ayyanthole, Nethilakkavu and the Thiruvambady temple, as
the main one. The Eastern group called as Paramekkavu, consisting in addition to
Paramekkavu temple, Karamukku, Chembukavu, Choorakottukavu and Panamukkamppilly.
The pooram was to be centered around the Vadakkunnathan temple, with all these
temples sending their poorams (the whole procession), to pay obeisance to the
Shiva, the presiding deity. The Thampuran is believed to have chalked out the
program and the main events of the Thrissur pooram festival. It is this
historical background that determines the course of the pooram program and it is
specifically the ruler's antipathy to the Brahmin aristocracy to open.