You all forgot about one thing....
Sting and Andy are practically his family also.
If it weren't for them he couldn't have provided as much for his blood family. Stew spent a better part of 10 years with Sting and Andy at his side and you'd be crazy not to call them brothers in one resort or another. They played, laughed, fought, you name it! Just like family!!
I am sure all the families are very close and are in full support (I hope).
All I know is that I spent 4 years with the guys in my college band doing shows, touring, and we are pretty close (but live far apart!).