Ancestry.com has a Family Tree for John BRUNMEIER & Christina BITTERMAN. She was dau/o Geo. Phillip BITTERMAN & Apollonia KOENIG. He was son of George BRUNMEIER & Ursula HANSURI. George was son of Leonhard BRUNMEIER & Philippina BERRETH.
In 1920, Christine BRUNMER (54, she & her parents b. Russia) was of Precinct 51, Osgood, Weld, CO, having migrated 1895+. With her were ch. b. SD: Edward, 22; Martha, 19; & Emelia, 16; & b. CO: Philpine, 14. On the same page were BRUNMIER, John H., 29, he & parents b. Russia; wf. Eliz., 28, b. NM, parents b. Russia; & ch. b. CO, Richard, 3, & Edna, 1.
Google This: BLM +"land patents." There were several BRUNMEIER patents in North Dakota & South Dakota.
SD Births: John BRUNMEIER & Christina BITTERMAN had Edward, b. 9 Apr. 1897; Martha, b. 26 Dec. 1900; Amelia, b. 17 July 1903; Hutchinson County, SD.
FindaGrave: Edward D. MRUNMEIER (9 Apr. 1897 - 21 Jan. 1983) & wf. Lydia SCHELERT (1906 - 1986) are buried in Resthaven Memory Gardens, Ft. Collins, Larimer, CO.
Jacob BRUNMEIER (1888 - 1977) & Emelia BRUNMEIER (1900 - 1971), are bu. Roselawn, Ft. Collins, CO, on same stone.
John H. "Lefty" BRUNMEIER, b. 1 Nov. 1891, Russia, & Wm. F. / F. Wm. (15 Nov. 1894 - 21 Oct. 1918) are bu. Pilgrim Cem., Weld Co., CO.
--not my family