At eleven o'clock on June 13, Karen Ann O'Rourke became the bride of Thomas Joseph Lawrence in the Dahlgren Chapel of Georgetown University. The bride was given in marriage by her brothers, Mr. John M. O'Rourke of Hopkinton, Mass. and Mr. Joseph Gerard O'Rourke of Marbelhead, Mass. The Rev. Richard Rodes performed the double ring ceremony which was following by a reception at the Four Seasons Hotel with dancing to the Group Reunion.

The bride's wedding dress, designed by Priscilla, was of white satin with an overlay of English net accented with appliques of alencon lace and seed pearls and styled with an empire waiste, long tapered sleeves, cathedral train, and skirt edged with satin covered with seed pearls. The cathdreal veil, trimmed with alencon lace and seed pearls, fell from a pearled tulip cap. Her attendants: Mrs. Alice Walsh Buckley, as matron of honor, and Claudia Turco, maid of honor, were gowned in raspberry pink, and the bride's niece, Kelly Ann O'Rourke, was flower girl.

The groom was served by James Bles, best man; William, Jr. and Robert Lawrence, his brothers, were ushers.

Mrs. Lawrence, daughter of the late Mr. and Mrs. John M. O'Rourke of Ashleigh, Mass., is a graduate of Georgetown University with a master's from Middleburg College. She is a teacher and head of the Foreign Language Department at St. John's College High School. Mr. Lawrence, son of Mr. and Mrs. William Lawrence of Reston, Va. and this city, attended the University of Virginia and is a legislative aide in Washington, D.C.

Following a honeymoon at Hilton Head Island, the couple is residing in Bethesda.