If an eligible veteran died before receiving their Massachusetts bonus, their family can apply for it. The payment goes to the spouse and children first, then parents, then siblings, then any other dependents.
Check the Veterans' Bonus Inquiry page to see whether a bonus was ever issued, then apply through the Massachusetts Veterans' Bonus Division page for applying on behalf of a deceased veteran.
The veteran’s DD214 showing the qualifying service, their death certificate, proof of your relationship to them, and proof they lived in Massachusetts for the six months before entering the U.S. Armed Forces.