Aparmita is the name given to Amitabha in his character of bestower of longevity. Aparmita may be turned either a Crowned Buddha or a Bodhisattva and is therefore richly clad and wears the thirteen ornaments.
Shakyamuni Buddha was born about 2549 years ago in what is now Nepal. He was known as Siddhartha Gautama, a prince and son of King Suddhodana and Queen Mayadevi.
Lokeshvara is one who refuses to accept Nirvana since he considers such acceptance selfish in view of the ignorance of the great majority of the people who have not yet attained that stage.