Trying to find the title for this book!

[montgomerymama]

Ok! I read a book YEARS (about 10) ago, and I absolutely loved it, and have not been able to figure out what the title was. Help me out if you can!
So, from what I remember there is a man who gets married to a native american woman. She has a couple of kids, and dies. Then his kids get sick and he is worried about loosing them too....
That is really all I can remember.... Its not a lot but I thought I would give it a shot! Thanks so much guys.