ETYM Latin informans, -antis, p. pr. of informare. Related to Inform.
A person who supplies information; SYN. source.

ETYM Old Eng. sours, Old Fren. sourse, surse, sorse, French source, from Old Fren. sors, p. p. of Old Fren. sordre, surdre, sourdre.
1. A document (or organization) from which information is obtained.
2. A facility where something is available; SYN. channel.
3. Anything that provides inspiration for later work; SYN. seed, germ.

One that warrants or gives a warranty.