Let us summarize what we have regarding each Buddha
Adi Buddha is avatar of Vishnu was born on 1887BC to Mother Anjana in Kikata (Bodh Gaya).
The Adi Buddha Established the Philosophy of Ahimsa, Non Violence. He preached against ritual Animal Sacrifices that has crept into Vedic Hinduism. He emphasized the divine in all beings and divinity of all souls arousing compassion for all.
Siddhartha was was born around 560BC in Royal Family of Suddhodana and Mayadevi in Lumbini in Nepal. Siddhartha received his name Gautama from his spiritual Master Gautama Muni, who belongs to Kapila dynasty(as per Sundarananda Charita). He left home his royal comforts to find enlightenment. He went to Bodh Gaya to meditate and got enlightenment.
Gautama Buddha philosophy that is Monist (the God, is inert, nonactive and without any characteristic) and that reaching the same inert and non-active state through Nirvana is the goal. For attaining freedom from all suffering and end cycle of rebirths, one should attain Nirvana. Gautama Buddha is the propagator of Bahyatmavada, Jnanatmavada and Sunyavada, three pillars of Atheism. He Went to Bodhgaya to medidate because of its spiritual potency as the birthplace of Adi Buddha.
Threvada Texts refer to six Preceding Buddhas (Those who have been awakened) as Vipasyin, Sikin, krakuccanda, Konagamara and Kashyapa, also they say Maitreya as the Buddha of the future.
Amara Simha Buddhist scholar, who wrote Amarakosha gives eighteen names of Vishnu avatara including the name Sugato (Which Shankara calls Buddha) and seven names of Shakya Simha Buddha without any mention of Sugato. So we can even argue that Shankara talks about avatar Buddha not Shakya Buddha. Amarakosha states the Lord Buddha is also known as Samanta Bhadra, whereas Gautama Buddha is a human being.
In Lalita Vistara, it is described how Gautama Buddha medidated on the same spot as the predecessor Buddha. The original name of Bodhgaya is Kikata, after Gautama attained enlightment there, it came to be known as Buddha gaya. Even today the rituals of worship is preformed by sannyasis of Shankaracharya sect.
Lankavatara Sutra, the famous buddhist work says that Ravana King of Lanka first worshipped Vishnu incarnation Buddha then successive and future Buddha.
Analysing Buddhist texts like Prajna-Paramita sutra, Astasahastrika prajna- paramita sutra, Sata-Shastrika Prajna, Pramita Sutra, Lalita Vistara shows three categories of Buddha namely
Human Buddhas: Like Gautama, who came to be known as Buddha after enlightment.
Bodhisattva Buddhas: Personalities like Samanta Bhadraka who were born enlightened.
Adi(Original-First) Buddha: the Avatar of Vishnu.
Bhagavata Purana says "At the commencement of the Kāli-yuga will Vishnu become incarnate in Kikata, under the name of Buddha, the son of Jina, for the purpose of deluding the enemies of the gods."
Puranas say that Adi Buddha was born in Ikshvaku Dynasty.
How Two were merged.
Adi Shankara, in discussion with others treated both of them as one person and did not discriminate between the two. Shankara Sunya philosophy is similar to Buddhist Nirvana. With his Mayavadha philosophy he not only stopped rise of Buddhism in India, but also started its decline. However acharyas who came after him did not agree and they came with corrections for clear vedic View
Vishnuswami -Suddha Advaitha
Ramanuja - Vasistadvaitha
Nimbarka - Dvaita Advaita
Madhva - Dvaitha
Chaitanya - Acintaya Bheda Bheda
Adi Buddha is contemproary of Srenika(Sunika) whose father was Hemajit or Kshemajit or Kshetroja or Ksetrauja. Son of Srenika is Kunika. His son is Dharshaka.
Gautama Buddha is contemproary of Bimbisara(Son of Bhatiya or Bhattiya), King of Magadha with Capital at Rajgirh. Bimbisara made married alliances with many kings of India. His first wife Kosaladevi was the princess of Kosala, daughter of king Mahakoshal and sister of Pasendi or Prasenjit. The marriage ended the hostility between Kosala and Magadha. Ajatsatru was Kosaladevi`s son. Bimbisara conquered Anga and send Ajatsatru as the ruler there. Champa was the capital of Anga. Bimbisara was assasinated by his son Ajathashatru. Gautama Buddha then went to sravasti, Capital of Kosala ruled by Prasenjit. Most of the teachings come from Sravasti. Buddhist, Puranic and Jain Accounts confirm Gautama Buddha to be the contemproary of Bimbisara.
Jain scriptures, described King Bimbisara as a disciple of Mahavira who frequently sought his teachings. As per Jain texts, he is referred to as King Shrenika of Rajgriha (being the possessor of a large army). Bimbisara sent Jivaka to Ujjain for medical treatment of King Pradyata, the king of Avanti.
Mahavamsa traces the Shakya dyansty to Ikshvaku dynasty and starts the dynasty with Ikshvaku.
Let us see the list of Contemproary kings as various religious texts
Kalashoka (Sons Bhadrasena, Korandavarna, Mangura, Sarvanjaha, Jalika, Ubhaka, Sanjaya, Koravya, Nandivardhana and Panchamaka)
All 10 sons ruled simultaneously.
How Reliable is Buddhist Historical sources
Indologists have been saying Puranas are not reliable, let us see how unreliable Buddhist texts are. It is from Buddhist texts that Indologists arguments come. There two schools of sources. Tibetan and Sinhala. There is Chinese source, which comes later.
Let us take the kings around Buddhas time
Ten sons of Kalasoka (22yrs)
Anuruddha, Munda (8yrs)
ten sons of Kalasoka (22yrs)
Nine Nandas (22yrs)
Aururddha, Munda (9yrs)
bhaddasena and 8 brothers (33yrs)
Uggasenananda and 8 brothers (21yrs)
Ujayain or Udayibhadda
1)Sources of Buddhist: First Where do Buddhist sources come from, they are not there from time immemorial like Purana or Jain sources. They are from definite time frame that is after Gautama Buddha. Mainly after the state patronage of Buddhism. Now how does Buddhist dates start from Ikshvaku dynasty. They should have got from some source. where else Purana. These Buddhist chronologies before Buddha are from Purana sources. If Puranas are the source of many Buddhist dates, how can Indology scholars choose to reject Puranas and take Buddhist sources.
2)Indian Dates: Dates from Purana or Buddhist or Jain are all Indian dates. Indologists are just playing one against other.
3)Not the Same Kings: Jain and Purana Chronology names does not tally with Buddhist Chronology names on contemporary kings
4) Differences within Buddhist: There are two main dates for Buddhists. One from Sinhala Buddhist and other Tibetan sources. There are two sources from Sinhala. That is Dipavamsa and Mahavamsa. There are differences between the two dates, but let us not overplay the differences.
The Tibetan Buddhist dates are more closer to Puranas date. But there are major differences. Such as when did Buddha lived. Date of Ashoka etc.
There is also Burma (Myanmar), though based on Lankan sources has a mind of its own because it has direct contact with puranic sourcse.
Chinese and Japanese follow Lankan, though they also have direct contact with puranic, so there are differences.
By Combining two Buddhas Indology scholars have discredited the Purana accounts and thus Indian History. Whenever the Puranas refers Adi Buddha they will cite Gautama Buddha to discredit and vice verse.
Colonel Kennedy, argues that the Buddha of the Purana and Buddha the founder of the Buddhist system of religion have nothing in common but the name, and that the attempted identification of these two is simply the work of European scholars, who have not been sufficiently careful to collect information, and to weigh the evidence they have had before them.
Jacobi Believes that Kakavarna(Puranas) = Kalashoka (Sinhalese Buddhist Literature) = Udyain (Jain Literature)
The Cambridge and Oxford histories of India accept 483 B.C as the date of Buddha’s nirvana. But, William Jones, on the basis of Chinese and Tibetan records infers that Buddha lived in the 11th century B.C. Historian Fleet, who makes a study of ‘Rajatarangini’, thinks that Buddha lived in the 17th century B.C. Chinese monk Fa-Hien puts Buddha’s Nirvana at 1050 B.C. These contradictory theories may confuse one altogether.
Indology scholars just pick and choose to discredit Purana sources. The history that Buddha lived in the 5th century B.C was propounded by E.J Rapson who writes that the exact date of Buddha’s Nirvana is not known and hence the popularly accepted year of Buddha’s Nirvana is imaginary. Sastry states that Western scholars arbitrarily skipped 12 centuries of Indian history because their ‘hypothesis’ about Alexander’s invasion did not match with centuries-old Indian chronology.
We see that Early Buddhist texts distinguishes the two Buddhas, while the later ones seem to ignored the former. The Rock Edicts of Piyadasi teachings are of Adi Buddha not Gautama Buddha. This clarification actually synchronizes the Buddhist and Purana Chronology and there seems to be no problem in merging the two once we take as two persons. The key is not play puranic , Jain, Buddhist chronology against each other, but synchronize them. The Conclusion is that : Gautama Buddha is not avatar of Vishnu. Avatar of Vishnu is Adi Buddha.
Modern Buddha and Vishnu Avatar Buddha are Different by Srila Bhakti Ballabh Tirtha Maharaja
Hindu Mythology, Vedic and Puranic, by W.J. Wilkins
Index to all Chronology Pages from Indic Studies Foundation
QUEEN CHELNA AND KING SHRENIK from Jainworld
Saisunaga Dynasty- The Third Dynasty of Magadha after the great war. from Kota Venkata Chelam - Ancient Indian History
Lord Mahāvīra and His Times By Kailash Chand Jain
History of Ancient India: From 4250 BC to 637 AD By J.P. Mittal
The dates of the Buddha
The Dynasties Before Alexander
grifter a splendidthing
Date of Buddha
Date of Shankara
Did Megasthenes Meet Chandragupta Maurya
Dating Indian History
Are Maukharis and Malwa Guptas Feudatories of Imperial Guptas?
India by Indologists
Alexander Invasion of India
Who is Diodotus