The Trustees of Reservations, the nation’s oldest land trust and one of the Bay State’s largest conservation and preservation nonprofits, hosted a not-so-small fund-raiser amid the apple trees outside the 18th-century home of Ralph Waldo Emerson in Concord. No less than three of the great-great-great-grandchildren of the celebrated poet/transcendentalist attended, including Dan Emerson, Alec Forbes Emerson, and Sukey Forbes, whose book, “The Angel in My Pocket,” came out last week. Nancy Nelson, superintendent of Minute Man National Historical Park, and Christopher Lydon of WBUR’s Radio Open Source co-chaired the event that also included a reading of Emerson’s poetry and even a skirmish between the 6th Middlesex Regiment and the Redcoats. We know who won that battle.Names can be reached at firstname.lastname@example.org. Follow Mark Shanahan on Twitter @MarkAShanahan. Follow Meredith Goldstein on Twitter @MeredithGoldste.