The four of spent a lot of time together. We camped out in the backyard a lot, built tree houses, hiked up to the national park, put on shows, played wargames, listened to Bill Cosby records endlessly, and played baseball. I broke his collar bone when I fell on him in a collision at home plate one time. When I got my driver's license, the others got their freedom from pedestrianism as well. We'd drive around in my old VW Bus, and Adrian would blow bugel calls out the window on his trumpet.
That was a long time ago. He and I have drifted apart over the years, what with living in different states, and interests diverging. He is still close to both of my brothers, and they all still share many of the same interests, so when I do see him, it's usually up at the farm. And we all still consider him to be the fourth brother in the family.
Today he is fifty years old. He can still talk like Donald Duck. Happy birthday, bro!