The Founder of Parama Dhamma Chetiya Pirivena Rathmalana, he was born in March 1811, at Walana Panadura. From his childhood he used to go to offer flowers to a certain Na-tree at the village with his grand mother. Under this tree there was a monk in a small Kuti. He was the Ven. Giddawa Gunaratana Thera . At the age of 7 this boy was given to this monk to be ordained. So he learnt the fundamentals in Buddhism and when he was 12 years, he was ordained by Ven. Giddawa Gunarathana Maha Thera at Indasararamaya Aruggoda in 1823. The name given to him at the Ordination was “Walane Siddhartha”
He received his Education from Ruparuna Pirivena Pelmadulla, under the guidance of the Ven. Galle Medhankara and the Ven. Induruwe Sumangala. He went there in 1835. After receiving his Education there, he came back to his temple (Siddhattharama, Walane, Panadura) where he was ordained. Thereafter, under the tutelage of the Ven.Giddawa Gunaratana Thera and the Ven.Nedimale Rewatha Thera, he started teaching Buddhism and languages for the people of Panadura. During this time he wrote some Commentaries and sub-commentaries for the Tripitaka (Canon). Some of the students at this period were Ven. Udugampola Ratanapala, Ven.Baddegama Saranankara,Ven. Werahera Sobhita, Pandit Batuwantudawe and Mr. Don Andrias de Silva.
When he was carrying out his services to the nation for few years there, he got the invitation from some pious devotees from Ratmalana to start a temple on a land offered to him. This temple was named Parama Dhamma Chethiya Pirivena later and Ven. Sri Siddhartha Maha Thera permanently resided here from 1949. He initiated to establish a Sangharama(residence for Bhikkus) and a Library to facilitate the education of young bhikkus and students attending to Pirivena. Whilst residing in Pirivena he devoted his time and effort to provide Buddhist Education to a very large number of monks and students from various parts of Sri Lanka. Ven.Siddhartha Maha Thera was one of the five leading prelates who initiated low country higher ordination at Kelaniya in 1956.He was the leading Prelate of the nine Prelates who involved in Thripitaka amendments at Raja Maha Vihara, Pelmadulla in 1867. After an immense service for dissemination of Buddha Dhamma in Sri Lanka this great Prelate passed away in 1868 at the age of 55years. “