Vaidynatha iyer was born on 16th May 1890 in Vishnampettai Village,
Thanjavur in then Madras Presidency in 1890 as the second of eight children in a Tamil Brahmin family to Arunachalam Iyer and Lakshmi Ammal. His siblings were Raamanaathan, Kamalaamba, Sankaran, Vaalaamba, Parvathi, Subramanian, Sivakaami. Iyer was a math teacher in Pudukkottai Maharaja's school. AV Iyer studied in Madurai Sethupathi High School. In 1909, he completed his SSLC. Iyer got his FA in Madura College. He was awarded the prestigious Neelakanda Sastri gold medal along as well as the Fisher gold medal by the institution. At the age of 18, after his FA examinations, Iyer's parents conducted his marriage with 9 year old Akilandam, who remained his spouse for the rest of his life. Iyer received his BA 1914 from Madras Presidency College. He was a teacher for a year at Bishop Heber Higher Secondary School in Trichy and for a year at Masoolipattinam Hindu Higher Secondary School, prior to qualifying himself in law and acquiring the status of Pleader. He entered the Indian independence movement in 1922 when he participated in the
Non-Cooperation Movement. He also participated in the
Vedaranyam Salt Satyagraha (1930) and the
Quit India Movement of 1942. == Temple Entry Movement ==