The word "Thiru" is part of city-names, such as Trivandrum or Thiruvananthapuram; Thiruchendur, Thiruvaiyaru, Thiruvenkadam, Thirumalai, Thirupathi, Thiruchirappalli, Thirukoilur, Thirukumaran, Thiruvannamalai etc.
Tamil scholar and publisher of classical literature, U. V. Swaminatha Iyer mentions in his autobiography that he once saw a palm leaf manuscript of Valayapathi in the Thiruvaiyaru library of his teacher, Meenakshi Sundaram Pillai.
Rangarajan has performed at Saint Tyagaraja music festival at Thiruvaiyaru for the past sixty years without a gap.