see|Appendix:Variations of "c"
From an orthographic variant of etc., in which the script of the e and t merged to become &
archaic et cetera
1612: George Wither, Epithalamia, Or Nuptiall Poems Upon the Most Blessed and Happie Mariage Betweene the High and Mightie Prince Frederick the Fifth, Count Palatine of the Rhein, &c., and Princesse Elizabeth, Sole Daughter to Iames, by the Grace of God, King of Great Britaine, France and Ireland
1739: W. (William) Webster, Remarks on The Divine Legation of Moses, &c. in Several Letters - If I had not done amongst them the Works that no other Man did, they had not had Sin, &c. John 15:24
1902: William Paton Buchan, Plumbing: A Text-book to the Practice of the Art Or Craft of the Plumber - Where a Geyser or hot-water heater is used it is a good and wise precaution to see that the bath-room, &c., when it is used is well ventilated.
1977: K. P. Punnoose, Bookdealers in India, Pakistan, Sri Lanka &c.
etc., et cetera