Helen Katherine Chittenden Pacelli was born June 1, 1880 in Columbus, Ohio and died February 22, 1924. She was first married to E. P. Ziegler of Columbus and later married in New York on April 8th 1916 to Quirino Pacelli a native of Rome, Italy. Pacelli was a sculptor with a studio at 637 Fifth Avenue in New York. She and Quirino sailed from San Francisco to Hawaii and Japan, they were on a round the world honeymoon. Her first husband Ziegler was granted a divorce November 19, 1915 and was given $1,800 a year and his dower rights to her estate that was estimated at three quarters of a million. Ziegler was an usher in the old Grand theater and they were married for 20-years. Her brother Campbell M. Chittenden died eight years prior. A half-brother Henry T. Chittenden, Jr was an attorney in New York City. Countess Pacelli was the granddaughter of the late E. T. Mithoff. Mithoff was one of the city's wealthiest residents and the extensive real estate holdings of the countess came to her by inheritance from her grandfather. Countess Pacelli was the daughter of another wealthy Columbus native, Henry Treat Chittenden who was a graduate of Yale University (1855), a lawyer (practicing in Columbus from 1858 to 1904), the owner of the Columbus Consolidated Street Railway Co., the Vice-President of the Commission for the Ohio Centennial Exposition of 1888, and the builder of the grand Chittenden Hotel in Columbus, Ohio, for which, among other luxuries, 14 rail cars of Vermont marble were imported. which operated until 1972. It was demolished in 1973.

The Chittenden family trace their roots back to the immigrant, William Chittenden, who arrived in Connecticut aboard the "St. John" in 1639. He was one of the founders of Guilford, Connecticut, the environs of which her family lived until her grandparents, Asahel Chittenden and Harriet Treat Chittenden, moved to Franklin County, Ohio in 1829.

*"New York, New York City Marriage Records, 1829-1938", , FamilySearch (https://www.familysearch.org/ark:/61903/1:1:24Q6-NYP : Mon Mar 11 20:25:29 UTC 2024), Entry for Quirins Pacelli and Helen K. Chittanden, 8 Apr 1916.