Rebecca Catherine Haines , the daughter of Angela and William Haines of New York , was married yesterday to Patrick James Kempton , the son of Gail and Donald J. Kempton of Massapequa Park , N.Y . The Rev . Walter J. Smith , a Roman Catholic priest , officiated at St. Patrick 's Church in Bedford , N.Y. Mrs. Kempton , 30 , received a medical degree in June from Weill Medical College of Cornell University .