Helena was the daughter of Seleucus I Nicator, one of the successors to Alexander the Great. She was married to Chandragupta Maurya, the first emperor of the Maurya Empire in India, in 305 BCE. The marriage was part of a peace treaty between the two empires, and it helped to solidify Chandragupta's rule over the Indian subcontinent.
Helena is a somewhat controversial figure in Indian history. Some historians believe that she was a positive influence on Chandragupta, helping him to adopt more Hellenistic ideas and practices. Others believe that she was a negative influence, leading to the introduction of foreign customs and religions into India.
Regardless of her exact role in Indian history, Helena is a significant figure in the early history of the Maurya Empire. Her marriage to Chandragupta helped to establish the empire as a major power in the region, and it also helped to promote cultural exchange between India and the Hellenistic world.

Here are some additional details about Helena's life:
1. She was born in the 320s BCE, probably in Babylon.
2. She was married to Chandragupta Maurya in 305 BCE, after the two empires signed a peace treaty.
3. She had two sons with Chandragupta: Bindusara and Justin.
4. She died sometime after 297 BCE, the year that Chandragupta died.
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