Last but not least we come to Marc.
In a large family like mine there is an interesting relationship that develops between the oldest and youngest sibling. It is a little like parent training. I look at Max now and I remember what Marc and Jackie were like at that age, and to a lesser extent Michael and Joy. I remember the fun I had when playing of them, teaching them things, showing them something for the first time.
So if there are any older siblings out there just starting out...be nice to your younger siblings, they think you are the coolest thing in the world. And when they grow up you want them to have memories of what an awesome older brother you were.