Is a prenuptial agreement valid if husband lied about his income?

Before our marriage, my husband wanted a prenup and I agreed because we both had kids from prior marriages and wanted to keep our property separate for them if we divorced. In the prenup, I gave up all alimony because at the time, we earned about the same income, and I’ve always been able to support myself even though it’s sometimes been a struggle. After 17 years of marriage, we began having marital issues and divorce is a possibility. I recently learned that all during our marriage, and even before, my husband has been receiving substantial income from trust account left for him by his deceased grandfather. I knew nothing about it when I signed the prenup. It now doesn’t seem fair that if we divorce, he will have alot more to live on than me even though I gave up furthering my career to raise our joint kids. If he lied about his income at the time I signed the prenup, can it be declared invalid?