I think the first pic is the brothers wife, not the shooter.
Thouworm, I agree with azkathy, I think your first pic is the older bro and his wife, also this one:
http://www.freerepublic.com/focus/news/3367755/posts?page=1#1
Thouworm, the eye color in your first pic is grey, while the color in the second and third pics is brown or black.
But here’s something interesting, look at the right (as you look at the pic) eyebrow in the second pic, its slanted with respect to the other, while the right eyebrow in the third pic is even.
More info on the survivors/victims in this story than any I have read. http://www.dailymail.co.uk/news/article-3344907/PICTURED-victims-San-Bernardino-massacre.html