Exhibit 10.15 ELEVENTH AMENDMENT AND CONSENT TO THE HOLDINGS GUARANTY ELEVENTH AMENDMENT AND CONSENT TO THE HOLDINGS GUARANTY (the "Eleventh Amendment"), dated as of April 16, 2003, among TRENWICK GROUP LTD., a company organized under the laws of...Lasalle Re Holdings LTD • May 15th, 2003 • Fire, marine & casualty insurance • New York
Company FiledMay 15th, 2003 Industry Jurisdiction