As shameful as it is I shall answer my own questions myself...
http://www.surnameweb.org/Escher/surname-origin.htm claims;
Origin of Escher, Meaning of Escher
Origin: The Lasher surname is an anglicised version of the german surname Lescher or L?scher. The first record of this surname is in Baden-Wurtemberg, Germany in 1261 a Freiderick Lescher von Kilchberg. The Lasher family in the United States owes their emmediate origins to approximately 5 Lasher families who emmigrated from Germany to the US between 1710 and 1734 to New York and Pennsylvania. Their is another common way of spelling the name in the US. Lesher. The meaning of the name/word L?scher is "extinguisher/eraser." That is the modern definition, however, as an old surname the meaning changes somewhat to mean a peacemaker or arbitrator. The meaning is to extinguish strife or unrest... a peacemaker.
Surnames: Lasher Lesher Lescher L?scher
Submitted by: John Lasher
3/4/2008 10:35 PM
On the part of Gleichmann:
Wiktionary says for Gleich in German;
Etymology
Old High German gilīh
[edit] Adjective
gleich
1. equal
2. same
Adverb
gleich
1. alike
2. soon
I presume "mann" is for "man" and the surname refers to the everyman, to the commoner...