Former Episcopal minister, now art collector, Jo Tartt outbid the Metropolitan Museum of Art Friday at an auction at Christie's in New York to purchase a rare sheet-copper urn designed by Frank Lloyd Wright. Tartt, who had been at Grace Episcopal Church in Georgetown for 10 years, paid $85,000 for the urn and said he was prepared to go higher when the Met bidder pulled out . . . In this the marrying season, Washington writer Larry Leamer, who is living in Los Angeles working on "As Time Goes By," a new Ingrid Bergman biography, slipped off to Las Vegas Sunday to marry Vesna Obradovic, the former assistant manager of Cachet Four Seasons here. It's Leamer's second marriage . . . Every Christmas season former Ohio governor Michael V. DiSalle would invite a group of Ohio newsmen to his Watergate apartment for a party. Tomorrow, a group of former Ohio newsmen that includes Murray Seeger, an AFL-CIO spokesman; David Hess, a Knight-Ridder Washington correspondent; Sanford Watzman, a State Department spokesman; Rick Zimmerman of the Cleveland Plain Dealer; and Frank Kane of the Insurance Institute for Highway Safety will gather at the Watergate Restaurant for a party in memory of DiSalle, who died in 1981 . . . Ritz-Carlton hotel owner John Coleman threw a Christmas party Monday to recognize the publication of the National Committee, Arts for the Handicapped's 1985 calendar. His cohost was Jean Kennedy Smith, founder of the committee. Also at the party were Eunice Shriver, "Wonder Woman" Lynda Carter and ABT's Martine van Hamel . . . The members of the Kingston Trio -- Bob Shane, Roger Gambill and George Grove -- were to become Kentucky Colonels at Charlie's Georgetown last night, where they opened a six-night engagement. The honorary titles from Kentucky Gov. Martha Layne Collins were awarded, according to Larry Crawford, founder of the trio's fan club, because the band's been "entertaining us for 27 years in a clean-cut, all-American way without using the stage as a platform for expressing their own religious or political views". . .