Mr. and Mrs. Jon Grant Ford of San Antonio announce the engagement of their daughter, Nancy Elizabeth, to Mr. Matthew Clarke Halbert, son of Mr. and Mrs. Richard Holloway Halbert of San Antonio. Miss Ford is the granddaughter of Mrs. Norman Archer of San Antonio, formerly of Brady, and the late Mr. Archer. The bride-to-be is a graduate of Alamo Heights High School and Trinity University where she received a bachelor of science degree in religion and a master of science degree in health care administration. Miss Ford is employed by the Witte Museum and is a member of the Association of Fundraising Professionals and the Junior League of San Antonio. Mr. Halbert, a graduate of Theodore Roosevelt High School in San Antonio, earned a bachelor of arts degree in architecture at the Universty of Texas at San Antonio and is employed by Braswell Architecture, Inc. The couple plan a June wedding at Marguerite B. Parker Chapel, Trinity University. Following a wedding trip to the coast of Maine, they will reside in San Antonio.