Vanisri

Jogamma is the widow of Brahmin Pandit Range Rao, and lives in a coastal village in Southern India along with her two married sons, Narsimha, who is married to Seethamma and has two sons; while Parasuram is married to Ansuya. Narsimha, who not only looks after the estate, but also works as a clerk, often ends up chiding Parsuram to do something proactive. (imdb)

Buchi Babu (Akkineni Nageswara Ra) is a Railway Station Master in a village. He is a simple man respected and loved by all. Vani (Vanisri) is a budding actress who gains fortune and fame in a short time. When her evil manager (Nagabhushanam) who is also her own uncle forces her to marry him for her wealth, Vani runs away and lands at Buchi Babu's house. He helps her out by giving shelter for one night and the next day, people assume that it is Buchi Babu's wife. (Wiki)

Raja after knowing his true identity, teaches a lesson to his enemies. (imdb)