Haller Lake is a small lake and neighborhood in north central Seattle, Washington, named for Theodore N. Haller, who platted the neighborhood in 1905. His father, Granville O. Haller, was one of Seattle's early settlers, an army officer who amassed a large estate in the region. The Duwamish tribe called the lake "Calmed Down a Little" (Lushootseed: seesáhLtub), probably referring to the lake site as a place of refuge during slave raids. Early settlers called it Welch Lake after it was claimed in the 1880s by a British immigrant named John Welch.