Ethel Grange

 is the sister of McMann & Tate client, J. T. Glendon.

Samantha and Darrin meet her when they dine at Mr. Glendon's house for business. Ethel and her sister-in-law, Doris, are so impressed with Samantha's dress (which they think she made herself), that they ask her to make dresses for them too.

Unbeknownst to them and Darrin, Samantha magically copied her dress from an original Aubert design she saw in Paris.