Families... for the V4? Sorry, but you can only raise Kuchipa and Mame Families on the V5.
To get a Kuchipa Family you must raise a Kuchipatchi with easy-going training, and it must have 100% bonding. Then you marry your Kuchi to a Yonepatchi, and viola! you have a Kuchipa Family.
To get a Mame Family, you must raise a Mametchi with smart training, and it must have 100% bonding. Then you marry it to a Chantotchi, and you've got a Mame Family!
When you get a pure family, you will get two eggs, and when they evolve into their second stage, one of them will turn into an adult and the other stays a child.
Hope I helped!
P.S.- If you want a Kuchipatchi on the V4, your character needs to specialize in Kindness (flower) skill points, and to get a Mametchi on the V4, your character needs to specialize in Intellegence (pencil) skill points. I think both characters must have about 80 or 90 of those skill points for it to evolve into a Kuchipatchi/Mametchi.