Namaskaram Swamy ,
Thayaraei perumal padaithara or Brahma padaithara ? Yaru first Brahmava or Thayarah ?
As per thenkalai sampradayam, except Perumal all others are jeevatmas. Atmas are anadi and so Thaayar is also anadi – not created by anyone. But Perumal has given a special place for Thaayar.
Brahma is a post, based on karma, a jeevatma takes that position.
adiyen