Is my wife entitled to any of my disability income that I use to support myself for my living needs?

Your question only makes sense if you are planning on getting divorced. If you are, you are each entitled to a portion of each other's retirment. If your disability comes out of your retirement (is construed as an early retirement, then that has to be examined. If the retirement is separate from disability, then she may or may not be entitled depending on the nature of the plan. If you have children, they are entitled to get support through SSI and any riders that may be attached to your disability pension.