The Nagarathars aka Nattukottai Chettiars are divided among themselves on the basis of temples called "Nagara Kovils". They are divided on the basis of nine temples that have many sub divisions. Marriages can take place among the various divisions. One cannot enter into an alliance with in the same division, but in some temples if the sub division is different then the marriage can take place. The temples are the places for the registering of marriages for the Nagarathars. On the day of the marriage or earlier, the bride's and the groom's side have to go their respective temples to register their marriage. The bride would renounce her temple and would be enrolled with the groom. They become a proclaimed member of the community and they are called as a "Pulli". The marriage becomes legally valid. On becoming a member, they start paying their annual subscription to the temple. From the temple on registering, the couples are blessed with the offerings from the respective temples. The temples and divisions are as follows:
ELLAYATRANKUDI
God : Kailasanathar
Goddess : Solnithya Kalyani
Branches : (7) Okkur udaiyar, Pattina samiyar, Peru marudhur udayar, Kazhni vasaka udayar, Kinkini udayar, Pera senthur udayar, Siru sethur udayar
MATHUR
God : Innutreswarar
Goddess : Periya nayaki
Branches : (7) Uraiyur udayar, Arumbakoor udayar, Mannur udayar, Manalur udayar, Kannur udayar, Karuppur udayar, Kulathur udayar
NEMAM KOVIL
God : Jayang konda soleeswar
Goddess : Soundara nayaki
Branch : Ela nalam udayar
ERANIYUR
God : Aatkonda nathar
Goddess : Sivapuri Devi
Branch : Thiru vetpur udayar
PILLAIYARPATTI
God : Marudhueswar
Goddess : Vadamalarmangai
Branch : Thiruvetpur udayar
ELLUPAKUDI
God : Thanthodrieswarar
Goddess : Soundaranayaki
Branch: Soodamani puram udayar
SOORAKUDI
God : Desika nathar
Goddess : Aavudaiya nayaki
Branch : Pugal vendiya pakkam udayar
VAIRAVAN KOVIL
God : Valar oli nathar
Goddess : Vadivudai Ambal
Branch : Siru kulathur udayar
Sub Branch: (5) Periya Vagupu, Theiyana Vagupu, Pillayar Vagupu, Kazhni vassal udayar, Maru thein thira puram udayar
VELANGUDI
God : Kandeswar
Goddess : Kamatchi Amman
Branch : Kazhni nallur udayar