Soon after getting married Jackman moved his family to Howard County, Missouri, and in 1855 they settled in Papinville, located in Bates County.
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By late in the 1840s he was living in Boone County, Missouri, where he look up work as a schoolteacher as well as farming.
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Sometime in 1830 the family moved to Howard County, Missouri, where Sidney Jackman was taught some basic schooling.
Sidney Poitier | Hugh Jackman | Sidney Lumet | Sidney Nolan | Sidney Bechet | Philip Sidney | Sidney Crosby | Albert Sidney Johnston | Sidney Herbert, 1st Baron Herbert of Lea | Sidney | Sylvia Sidney | Sidney Reilly | Sidney Altman | Sidney Paget | Sidney Howard | Sidney Colvin | Henry Sidney | Sidney Smith | Sidney Lee | Sidney Godolphin, 1st Earl of Godolphin | Sidney Cotton | Sidney Blumenthal | Donald Sidney-Fryer | William Sidney, 1st Viscount De L'Isle | Sidney Sheldon | Sidney Robertson Cowell | Sidney Rigdon | Sidney Olcott | Sidney, Nebraska | Sidney Lanier High School |
Cousins of the German Carolingians, in: Katharine Keats-Rohan und Christian Settipani : Onomastique et parenté dans l'Occident médiéval, 2000, ISBN 1-900934-01-9.
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Donald C. Jackman received the Ph.D. in 1987 from Columbia University with the dissertation entitled The Konradiner: a study in genealogical methodology dealing with the family of the Conradines.
When MG Galen B. Jackman replaced Jackson in 2003, Jackman solidified the role of JFHQ, commanding the response to various regional emergencies and National Special Security Events (NSSE), proving the potential of JFHQ-NCR.
He, along with Lynton Wilson, Anthony S. Fell, James Fleck, Henry N.R. Jackman and John McArthur, helped establish a chair in Canadian business history at the Joseph L. Rotman School of Management, which is the first chair of its kind in Canada.
After his return to the United States, was elected member of the National Council of the YMCA, became Treasurer, Vice Chairman, Chairman, and President Emeritus of Church World Service; Chairman of the Executive Committee of the Josiah Macy, Jr. Foundation; President and Honorary Chairman of Princeton-in-Asia.
Turning the Tide: One Man Against the Medellin Cartel ISBN 978-0-451-40317-9 (with Peter Abrahams), (pub. 1991) a novelized account of a conflict which took place in the Bahamas between drug baron Carlos Lehder and an American professor Richard Novak's investigating hammerhead sharks there.
Donald C. Jackman considers Stephan I a son of Siegfried I. Both Jackman and Josef Heinzelmann consider Stephan as being identical to Stephan, Vogt of Worms documented with his brother Markward in 1068.
In 1904, Jackman was appointed dean of the growing School of Education of the University of Chicago (formerly the Cook County Normal School).