A widow (female) or widower (male) is a person whose spouse has died and has usually not remarried. The male form, "widower", is first attested in the 14th century, by the 19th century supplanting "widow" with reference to men. The adjective for either sex is widowed. These terms are not applied to a divorcé(e) following the death of an ex-spouse.
Horizon scandal: Widow received compensation offer days after husband's death
Widow of Horizon scandal victim urges government to speed up compensation payouts
BBC News