Ascensión Mendieta was just 13 in 1939 when her father was lined up against a wall in Spain and shot by a firing squad of soldiers loyal to Gen. Francisco Franco. His body was then dumped into a mass grave.

Ascensión would devote her entire life to finding her father and giving him a proper burial. Only recently, at age 92, did she fulfill that ambition.

After decades of agony and searching, she located him in 2017, in the cemetery at Guadalajara. She had his remains exhumed and buried him in Madrid at a ceremony attended by hundreds of mourners.

“Now I can rest in peace,” she said at the time.

On Sept. 16, Ms. Mendieta died in Madrid at 93, her family reported on social media. Her last wish was carried out when her own coffin was placed in the same tomb as her father and she was buried with him.