Mary Helen Wiley Jarman and Gilbert M. Grosvenor were married last Friday at the Washington Cathedral by the Bishop of Washington, The Rt. Rev. John T. Walker. The reception followed at the Metropolitan Club.

Mrs. Grosvenor, daughter of Dr. W. Dabney Jarman of Washington, D.C. and the late Margaret Brandon Jarman, was attended by her sister, Margaret Jarman Gantner, as matron of honor. W. Dabney Jarman III and Frederick A. Jarman, the bride's nephews, were attendant and ring bearer. The bride wore her mother's pearl necklace and carried a bouquet of Georgianna orchids with Waburn Abby roses adorned with an ancestral lace from the wedding of Alexander Graham Bell, the groom's great grandfather. Mr. Grosvenor, son of Dr. Melville B. Grosvenor of Washington, D.C. and Mrs. Helen Rowland Grosvenor of North Palm Beach, Fla., had his brother-in-law, Andrew S. Gantner, as best man. He chose his brother, Edwin S. Grosvenor, and brother-in-law, Richard D. Lemmerman, as head ushers. His children, Alexandra Rowland Grosvenor and Gilbert Hovey Grosvenor II, served as flower girl and ring bearer.

The bride, a graduate of the Madeira School and Colorado Women's College, attended graduate school at the University of Colorado and is presently teaching at the Potomac School. Mr. Grosvenor, a graduate of Deerfield Academy and Yale University, is Editor of the National Geographic Magazine. CAPTION: Picture, no caption