The characteristics of a large family are examined, including at the federal and regional legislative levels. The family-legal and socio-legal implications of its support and protection are identified. Attention is drawn to the lack of protective mechanisms in family law for multi-generational families, particularly the lack of family-legal support for adult children's care of elderly parents. The legislative decision on the grounds for supporting widows of de facto spouses of special military operation participants who had three or more children (within three years) is criticized. Restrictions on the freedom of marital regulation in large families are proposed.