This surname is still recognized as linked to the Swiss central region (Zurich, Zug and Lucerne) with roots in the cities of Risch and Steinhausen.
The Risch algorithm is summarized (in more than 100 pages) in Algorithms for Computer Algebra by Keith O. Geddes, Stephen R. Czapor and George Labahn.
Later, Geddes was acting lieutenant governor again in May and June, 2006 after Lieutenant Governor Jim Risch became governor upon the resignation of Governor Dirk Kempthorne to become Secretary of the Interior until Mark Ricks, whom Governor Risch appointed to fill the vacancy in the office he left, was confirmed by the Senate.