Complex sentence: The Bhramapureeswarar shrine is housed in the lower level, Periyanakar in the second level with Periyanayaki on a'Thoni', hence the name Thoniappar.
Split into simpler sentences: The Bhramapureeswarar shrine is housed in the lower level. The second level houses Periyanakar with Periyanayaki on a'Thoni', hence the name Thoniappar.