Dharma Seelan(1993)

Original title: தர்மசீலன்

Thamizh Selvan, an orphan who works in a hospital, tries to discover the truth of his parentage. Though the head of his orphanage claims that a recently deceased nun was his mother, others deny it. So Thamizh teams up with a reporter Durga, he meets at the nun's wake, and the two work to unearth the facts.