Alison Corfield says she is delighted by the parish council's decision to correct her great uncle's memorial name.
Mrs. Corfield, from Shrewsbury, says her family had tried to hide the extra "s" by covering it with mud.
She wrote to councillors arguing that a change would be appropriate as the 100th anniversary of the start of hostilities approached.
More top news
Generally dry with sunny spells today.
Police are searching for a missing 21-year-old man who has suffered with depression in the past.
A murder investigation is underway after an 18-year-old was stabbed to death in Birmingham.