06/17/2026
Millicent Johnsen • 1922–2013
Millicent Mercer Johnsen, one of the area’s most active philanthropists, had a special love for the Twin Lights and was a longtime supporter of the Twin Lights Historical Society. She spearheaded the group that convinced the Boston Museum of Science to relinquish the Fresnel lens that had been removed from the South Tower when the lighthouse was decommissioned. Johnsen served as President of the Garden Club of America and owned the Cheval Corporation, which bred and trained thoroughbred racehorses. She received the Silver Bell from the Seamen’s Church Institute for her lifelong support of seafarers. Her father, Henry Mercer, headed the syndicate that built the yacht Weatherly, which won the 1962 America’s Cup.