I was divorced in 2006 after 43 years of marriage. A trust attorney divided our assets. I received no pension or alimony, but Social Security was written into the divorce settlement: It's supposed to be combined and split in half. My ex-husband's Social Security is larger than mine, so each month he has to give me the difference so they are equal.

If he dies before I do and his trust is dispersed, am I still entitled to his portion of the Social Security?

When...