To the extent that you're trying to keep your fiance's mother from having access to your son's possible death settlement proceeds she has no right to them but I'd urge a pre-nuptial agreement to preclude the same action as well as updating your will to provide for that expected income to go to someone other than your fiance. I'd also consider establish a trust for the expected proceeds that you are trustee because some states may view any assets acquired during the marriage as common property.
Answered on Aug 30th, 2012 at 5:15 PM