The word "yonder" is used to indicate something that is further away than something else that has already been mentioned, and is often used to emphasize the distance between the speaker and the object being referred to.
Here are some examples of how "geond" might have been used in Old English:
* "He fór geond þone eard" (He went beyond the land)
* "Þa wæron geond þa ealdormenn" (Then were across the ealdormen)
While "yonder" has no direct Old English equivalent, it can be seen as a descendant of "geond" which conveyed a similar meaning of distance and direction.