found: Russell, M. Marriage records, Harris County, Texas, 1979:v. 1, leaf 3 (name ch'gd. Mar.? 1840 to Harris County from Harrisburg County)
found: GeoNames, algorithmically matched, 2009(adm2; 29°50ʹ01ʺN 095°24ʹ01ʺW)
found: Wikipedia, November 10, 2018(Harris County, Texas; First Congress of the Republic of Texas established Harrisburg County on December 22, 1836. The original county boundaries included Galveston Island, but were redrawn to its current configuration in May 1838)
found: Texas State Historical Association website, November 10, 2018(Harris County, originally Harrisburg County, is located on the upper Gulf Coast in Southeast Texas and is bounded by Waller County on the north and west, Montgomery County on the north, Liberty and Chambers counties on the east, Galveston and Brazoria counties on the south, and Fort Bend County on the west; Harrisburg County was formed by the First Congress on December 22, 1836; county encompassed the territory of the old municipality plus Galveston Island (the mainland was attached to Brazoria County) until May 1838, when its modern boundaries were established. In December 1839, Congress changed the name to Harris County) - https://tshaonline.org/handbook/online/articles/hch07
