Parashurama, one of the 10 avatars of Vishnu, was born to the Brahmin sage Jamadagni and Princess Renuka, a Kshatriya. Suspecting Renuka of infidelity, Jamadagni ordered Parashurama to behead her, which he did. When his father was slain by a Kshatriya, he killed all the male Kshatriyas who lived on earth 21 successive times. (including the new generations). The Gayatri Mantra of Lord Parasurama is believed to improve the relationship among family members, especially parents. It also makes one courageous and victorious. The best time to chant it is Ekadasi thithi and Saturdays. It should be recited 11, 108, or 1008 times.