check this link. because there many types of thapa. U will get some info from this http://en.wikipedia.org/wiki/Thapa
The Thapa caste is often associated with the Rajput community, particularly in regions of northern India and Nepal. Traditionally, Thapa is considered a martial and landholding caste, and many Thapas claim Rajput ancestry. However, caste classifications can vary significantly across different regions and communities, leading to varying interpretations of their status.
Bhimsen Thapa was born in 1775.
Kulbir Thapa was born in 1889.
Kulbir Thapa died in 1956.
Arun Thapa died in 1999.
Arun Thapa was born in 1952.
Jharna Thapa was born in 1981.
Varsha Thapa was born in 1991.
Tulasa Thapa was born in 1970.
Tulasa Thapa died in 1995.
Rekha Thapa is 5' 3".