Aggie Cromwell

Splendora Agatha "Aggie" Cromwell the 3rd is the mother of Gwen and grandmother of Marnie, Dylan, and Sophie. She is the daughter of Marvin, Merlin's cousin. She was the Queen of Halloweentown, as Marnie discovers when she goes back in time. Splendora reveals her preference to be called 'Aggie'. Splendora (Aggie) later mentions that she will be the one to train Marnie, and Marnie says "See you in a thounsand years, Grandma".