But Sir Launcelot rode overthwart and endlong in a wild forest, and held no path but as wild adventure led him.
The hero goes "overthwart and endlong," just like the figures whom all readers know in Malory, and some in his originals.
De Lancre concludes his description of the dances (see above, p. 131) by an account of an 'endlong' dance.
And last, between the endlong beams I stretched Stout thongs of ox-hide, dipped in purple dye.
A sigh sent wrong, A kiss that goes astray, A sorrow the years endlong— So they say.
Old English andlang "from end to end, lengthwise" (see along) with Middle English substitution of ende (see end (n.)) for first element. Meaning "at full length, horizontally" is from early 15c. In Middle English frequently paired with overthwart and together meaning "lengthwise and crosswise," hence "in all directions." As a preposition c.1200. see along.