The punishment not only "her grace's displeasure, but to be committed to prison without bail or Mainprise."
"Curiosities of Literature, Vol. 3 (of 3)"
Isaac Disraeli
Nevertheless, seeing Fillet retire to execute the knight's commands, he recollected himself so far as to tell the prisoners, there was no occasion to give themselves any farther trouble, for he would release them without bail or Mainprise.
"The Adventures of Sir Launcelot Greaves"
Tobias Smollett