The name Isha has its origins in Sanskrit, an ancient Indo-Aryan language that was widely used in the Indian subcontinent. It is derived from the Sanskrit root word "ish," which means lord, master, or ruler. The name Isha, therefore, carries the meaning of "ruler" or "lord."

In Hindu mythology, Isha is one of the names used to refer to the supreme deity, Lord Shiva. It is mentioned in several ancient Hindu texts, such as the Upanishads and the Puranas. The Shvetashvatara Upanishad, for example, mentions Isha as an all-pervading and all-powerful being who is the source of all creation.

One of the earliest recorded uses of the name Isha can be found in the Rigveda, one of the oldest sacred texts in Hinduism, dating back to around 1500-1200 BCE. In the Rigveda, Isha is described as a divine being who bestows blessings and protection upon devotees.

Throughout history, several notable figures have borne the name Isha. One of the most famous was Isha Upanishad, a revered Hindu sage and philosopher who lived around the 8th century BCE and is credited with authoring the eponymous Upanishad, a sacred Hindu text.

Another notable figure was Isha Sarasvati (c. 1835-1918), a renowned Indian philosopher and spiritual leader who founded the Shanti Ashram, a prominent center for the study of Vedic philosophy and meditation.

In the realm of literature, Isha Shrestha (1925-2007) was a celebrated Nepali writer and poet, known for her contributions to the Nepali literary canon and her advocacy for women's rights.

Isha Ambani (born 1991) is a prominent figure in the Indian business world, serving as a director of the Reliance Industries conglomerate, which was founded by her father, Mukesh Ambani.

Isha Sesay (born 1976) is a British journalist and author, best known for her work as a correspondent and anchor for CNN, covering major global events and reporting from various conflict zones.

While the name Isha has its roots in ancient Sanskrit and Hindu culture, it has transcended its origins and gained popularity across various regions and cultures, with people from diverse backgrounds adopting it for its unique and meaningful connotations.