Siddhārtha Gautama (Sanskrit; Pali: Siddhāttha Gotama) was a spiritual teacher from ancient India and the historical founder of Buddhism. He is universally recognized by Buddhists as the Supreme Buddha of our age. The time of his birth and death are uncertain: a majority of 20th-century historians date his lifetime from circa 563 BCE to 483 BCE, but some more recent scholars have suggested dates around 410 or 400 BCE for his death. This alternative chronology, however, has not yet been accepted by other historians.
Gautama, also known as Shakyamuni (“sage of the Shakyas”, in Pali "śakamuṇi"), is the key figure in Buddhism, and accounts of his life, discourses, and monastic rules were summarized after his death and memorized by the sangha. Passed down by oral tradition, the Tripitaka, the collection of discourses attributed to Gautama, was committed to writing about 400 years later.