Heirs spar for exec’s riches: Grandson of Lilly officer who died in ’77 fights widow’s trust
Robert E. Koffenberger joined Eli Lilly and Co. as a salesman in 1939. By the time he retired in 1974, he was one of the company’s highest-level executives, a member of the board of directors-and an immensely wealthy man. Now, 28 years after the Indianapolis executive’s death, a fight over that fortune has split his grandchildren. One of the eight has launched a court fight here charging that his brother and sister-in-law took advantage of the cloudy mind of Koffenberger’s…