Sri Sundara Prasanna LakshmiNarasimha Swamy is one of the various forms of Lord Narayana as part of his divine Narasimha avatara. In India, Lord Narasimha is worshipped in various forms. Some worship the lord in this Ugra Rupam, and some in the form of Prasanna Rupam along with Lakshmi Ammavaru. One of the ardent devotees has built a temple in Rajahmundry(On Tilak Road). This temple portrays Lord Narasimha Swamy in his Prasanna Rupam. The lord's idol in this temple is one of the rarest to be seen in the state of Andhra Pradesh. In this temple, Lord Narasimha was installed with Lakshmi Ammavaaru, on AdiSeshu.
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Sundara Prasanna Lakshmi Narasimha Temple Wikipedia(Text) CC BY-SA