This document provides comprehensive notes on Unit One of Family Law, focusing on the Hindu Marriage Act and dissolution. It clarifies who is considered Hindu, detailing definitions by birth and conversion, and outlines the ancient and modern sources of Hindu law, including Shruti, Smriti, customs, and legislative acts. The notes also extensively cover the concept of marriage under Hindu law, its sacramental nature, historical forms, and modern classifications like valid, void, and voidable marriages as per the Hindu Marriage Act, 1955. Finally, it details matrimonial remedies such as restitution of conjugal rights, judicial separation, and divorce, including grounds and procedures for mutual consent divorce. This resource is invaluable for law students studying the GGSIPU syllabus.