Madhava is a name for Indian deity Lord Krishna. According to ‘Bhagavad Gita’ it is written that Vishnu (Indian deity) being the husband of the goddess of fortune (Lakshmi), has been address by to Krishna in the first chapter as follows:

“What should we gain, O Krishna, husband of the goddess of fortune, and how could we be happy by killing our own kinsmen?”(Bhagavad-Gita 1.36)

Also in the Bhagavad-Gita, Arjuna addressed lord Krishna as “Madhava” (meaning “Lord of fortune and also slayer of the demon Madhu”).
krishna (1)