Source content from Kress Family History by Karl Friedrich von Frank. Vienna 1930
Since we can follow the history of a family, with the exception of some dynastic houses, only as far as written records have come down to us on the one hand and the use of permanent hereditary family names have been practiced on the other, there is at the beginning of an investigation of an old race (group of people) in most cases the problem of interpreting the name, which can be solved either easily clearly, ambiguously, or not at all, according to the kind, place, and time of its formation.
Since the eleventh century those names became at first hereditary, which were used by the more important higher aristocracy of their times, according to their estates. The lower nobility followed this custom considerably later, and the period of development for permanent names lasted until the Reformation.
Thus the fact that the family Kress in all its different ways of spelling (including Cress) can be documentarily proved to be of a very early time, that is about the middle of the twelveth century (Wurzburg), leads to the conclusion that its bearers were of very good birth even in those times.
It would seem very interesting to find out the real meaning of the name Kress(e).
With reference to the aforementioned classification, I should rank it in the second group; namely, among those, which allow several interpretations as follows:
A) The genus of plants of cresses, which shows different varieties and is known scientifically under the collective "Lepidine." and is most frequently found in damp places, near creeks, wells, etc. For that reason, there are a number of places which have taken their name on the one hand from the presence of water, and on the other hand from that of such a plant; as, for instance, Kressenbach, Kressenbrunn, etc.
The formation of names could possibly be explained in this way; namely that the first Kress lived in a place, which was particularly known for the frequent presence of this plant, from which his estate as well as his person derived this name.
B) In former times a fish, now called groundling, "Gobio" scientifically, was called in Germany "Kress(e)." It was a characteristic feature of a barbel at its mouth. It would be quite reasonable to suppose that a man, who had so sparse a beard that it looked like the barbel of a "kress," was given the nickname, "the Kress," which was left to him and his issue as a family name.
There are, indeed, bearers of the name Kress, who bore the fish kress in their coat-of-arms. These may be taken as so-called "canting or allusive arms," which surely had their origin in the meaning of the names and not vice versa. We have found analogies for the fact that family names among the most important oldest noble races (families) of Germany have been derived from the names or features of animals. Let me only mention for instance the Barons Gans (Goose) of Pulitz, the Ochs (Ox) of Guntzendorff, the Counts Rindsmaul (Oxmouth), etc.
C) A further linguistic possibility of derivation, which, in my opinion, is most probable, is one from the old native Germanic heathen word "Gradas," which means "the eager one." At first sight there seems to be no similarity between this word and Kress. However, if we trace its development further, we find at first as monosyllabic abbreviations the follow forms: Grad(e), Kratt, Kreth, from which later on the following diminutives were derived: Gratz, Grotz, Gretz, Gretsch, Gress, Cress, Kress.
Considering the fact that in old times the entry of names in documents and registers was practically never made on the basis of documentary or written manuscripts but according to verbal statements, even the non-professional will understand that just as with other names, the spelling of the name Kress was subject to several changes and shows a number of variations. We know for instance of Crezze, Crezzo, Cresse, Cress, Cres, Crehs and the same forms with the beginning letters G and K, which were practically the same in those times. It even happened that in one and the same document the name was written orthographically different. Neither should the influence be forgotten, which Latin and French exercised upon the orthography of the German language.
Kress may be from a much-altered pet form of the personal name Erasmus, a Latinized form of Greek reasmos “loved”
Kress may be from a much-altered pet form of the personal name Christian
The above proposed origins have been suggested and published in books on our family history. As I have pondered the meaning of our surname, I look back to what our earliest ancestors said of their origin. The early Kresses of Nuremberg believed that their ancestors had come from Bohemia. When I read the story about how the supposed early knight named Kress or Krzes had helped Duke Hostivit, I am very aware that this name Hostivit is part of the legendary history of Bohemia before authenticated records can prove the existence of those ancient leaders. In fact, the story supposedly happened in 883 AD which would have been during the reign of the first verifiable Duke of Bohemia Bořivoj I who was supposedly the son of Hostivit. So either they mixed the names up in the story or the dates in the story are off by a decade or so. Either way, this got me interested in Bohemia's legendary history from which I discovered that they were of Slavic origin and had several legendary Dukes or Princes who may or may not have really existed. What fascinates me is that one of those legendary Dukes who supposedly preceded Hostivit was named Křesomysl which seems very similar to Kress. That name actually has a known meaning. Křesomysl's name is thought to be derived from the old Slavonic words "křesat" meaning to strike a light and "mysl" meaning mind or spirit thus literally the name should have meant "lighting the mind".
It is therefore plausible if not probable that the personal name Kress given to a man in Bohemia would have been influenced by the Slavic meaning, so I highly suggest the meaning of the name is something more akin to
"Light, Revelation, Fire, or even Lightning Strike."
How interesting it is then in light of that ancient story and this plausible meaning of Kress that the Kress descendants decided to bear a coat of arms in fiery red with a sword.
In fact, if we go back further into the pre-Christian pagan history of the Slavs, we can find that there was a deity they worshipped called Kresnik. Kresnik (or rarely Kersnik and Krsnik) is a Slavic god associated with fire, the summer solstice, and storms. The name of Kresnik has no clear etymology. Connections with Russian Khors or Xors and Indian Krishna have been proposed in the past. The name could be connected with old Nordic hress with the meaning (fresh, fiery, alive, vivid), but also with ker-/kre- with the meaning (to grow, to feed), perhaps with the Iranian root krs-/kars-, and also with Slavic krst- (cross) The name of Kresnik could be derived from Balto-Slavic linguistic heritage: the festival of Kresze is known among Balts and an old Slavic word krěsδ has the meaning of (fire). Three possible connections with the root krês are: Sun, Solstice or blow.
Kres is the Slovenian word for bonfire.
There seems to be a theme here.