Microsoft family gamesharing

Not the Family feature, no, but you can with the Home Console feature.

You can nominate a home console for your Microsoft Account. Any other account that uses that console can enjoy the benefits associated with your account (access to your games, DLC, online play etc.).

The Family feature is more about the supervision of youngsters.

- Jason

Gamesharing is for family purpose only.

Gamesharing with strangers is a MISTAKE, you might get scammed and lose access to your account, you also might get banned when you gameshare with people from different countries, Gamesharing is meant to be with friends and family.

gamesharing is for family, all that life together as family, not for sharing games with friends.

i think this is the wrong forum for asking this stuff.

With 3 consoles, you would need to buy the games and gold on 1 other account as well. It is only possible to share on 1 console at a time. If you were to move your Home console to the new console your other brother is getting, then your 1st brother would
no longer have access to your gold/games.