Views/OG integration

Is it possible to make a view that filters by groups that users with a specified relationship with you are subscribed to?

My particular use case:
In a church web site I want to be able to have several layers of calendars. A calendar filtered by a specific group. A calendar filtered by all groups I am subscribed to, and a calendar filtered by all groups I and my family are subscribed to. The family is specified as all users who are part of a spouse relationship or a parent/child relationship.

Possible?