Is H entitled to W's estate after waiving all claims ahead of their marriage?

In this scenario, H is not entitled to any share of W's estate after waiving all claims ahead of their marriage due to the legal principle of waiver. When H and W agreed to waive claims to each other's estates prior to marriage, that agreement is typically upheld unless there are extenuating circumstances that challenge its validity. A waiver is a voluntary relinquishment of a known right, and by waiving claims to W's estate, H has effectively agreed not to pursue any interest in that estate upon W's passing.

The specifics of whether H would be entitled to the estate depend on the exact language and terms of the waiver and the applicable state laws, but in general, such waivers are honored as they signify the parties' mutual consent to delineate their financial rights and responsibilities in advance of their marriage. Thus, the straightforward interpretation of the situation leads to the conclusion that without any valid claims to set aside the waiver, H is not entitled to any share of W's estate.