Miss Louise Branch, a photographer and dog breeder, was found dead yesterday, apparently of natural causes, in her room at the St. Regis Hotel. She was 58 years old. --- Miss Branch was a member of a prominent Virginia banking family. She was a cousin of the late James Branch Cabell. the author, and a niece of Ellen Glasgow, the late Southern novelist. --- On Thursday, Miss Branch had returned to the city from her villa in Fiesole, Italy, for a few days' visit before leaving for Richmond. Va., to spend Christmas with her family. She formerly had operated the English Bookshop here and had originated the Dance International, which brought dancers from forty nations to Rockefeller Center in 1937.--- In recent years, Miss Branch had been living at the Villa Marsillo Fizino, near Florence. ---She also traveled widely and had homes in Aspen, Colo., and at Quaker Hill, Pawling, N.Y. --- For the last fifteen years, Miss Branch had raised black standard poodles at the Clarion Kennels, which she operated in Pawling. In 1948, she combined her photography and dog-breeding enthusiasms by illustrating the book, "Training You to Train Your Dog," written by Blanche Saunders.--- Miss Branch was born In New York and graduated from the Westover School, Middlebury, Conn. She was the daughter of the late Judge John K. Branch of Richmond and the former Beulah Gould of Pawling. Her father's family founded and managed the Richmond banking house of Thomas Branch & Co., one of the oldest in the country. --- Miss Branch had operated the English Bookshop at 64 East Fifty-fifth Street from 1931 to 1940 with a friend, Ruth W. Jones. --- The 1937 dance festival, which Miss Branch organized, brought together the foremost modern and ballet dance groups from the world for thirty-five days to show the development of the dance in the twentieth century. ---Also an accomplished sports woman, Miss Branch won the Virginia state golfing championship in 1922 and the Italian championship in 1929. --- Surviving Is a sister. Mrs. E. Addison Rennolds of Richmond. --- A funeral service will be head at 3 P.M. tomorrow from Mrs. Rennolds' home. --- Burial win be In Hollywood Cemetery in Richmond. --- New York Times, New York, New York, 14, Dec. 1959.