Their first child, Lydia Ann, was born in France and was sponsored at her baptism by Grand Duke Michael Mikhailovich of Russia and presented at the British court.
Archbold, Saunderson and Lydia traveled to the US on the RMS Lusitania in 1908, making headlines for bringing with them two lion cubs the family had captured on a big game hunt in Africa.
[1] Archbold was a keen hunter, she donated big game trophies to several natural history museums and had others made into exotic furnishings.
The divorce settlement left Foxlease to Archbold who, keen to sever all ties to England, wanted to give it to the Girl Guides.
[1] On her return to the US Archbold rented the Greystones estate, near Rock Creek Park, Washington, D.C., for six months before she purchased 60 acres (24 ha) of land on Reservoir Road where she built Hillandale, a house designed by Josephine Wright Chapman in the style of a Spanish villa.
In 1923 she was among a group of women that "invade[d] the offices of the senators and congressmen from their states, to ask them to vote for Equal Rights" and she personally petitioned president Warren G. Harding on the amendment.
[1] Possibly inspired by Moira's marriage to an explorer of southeast Asia, Archbold commissioned a diesel-powered replica of a 15th-century Chinese junk, the Cheng Ho, and took two cruises on the vessel, collecting botanical and zoological samples in the Maluku Islands and Melanesia.
[1][3] On November 10, 1924, with Washington banker Charles C. Glover, Archbold donated 100 acres (40 ha) of land around the Foundry Branch of the Potomac River to the National Capital Planning Commission.
Archbold was keen to establish the land, which contained excellent examples of beech, elm, and oak trees characteristic of the area before settlement, as a greenspace safeguarded from urban encroachment for the use of citizens of the city.
Quiet pathways lead down its sides along the meandering creek bed with its sycamore-tulip tangles, furnishing restful retreats for adults and fascinating children.
Archbold secured the support of Secretary of the Interior Stewart Udall and, after a public meeting, the plans were amended on January 7, 1958, to save the park.
After a funeral at Hillandale she was buried at Ivy Hill Cemetery in Upperville, Virginia, near her son John's Foxlease Farms estate.
[1] Her estate won a 1972 case in the United States Court of Claims for her Glover-Archbold Park legal fees to be counted as tax-deductible charitable contributions.