In old English law . Head money or common fine . Money paid yearly by the residents of several manors to the lords thereof, for the certain keeping of the leet, (pro eerto Ictw;) and sometimes to the hundred. Blount; 6 Coke, 78. Certa debet esse intentio, et narratio, et certnm fundamentum, et certa res CERTA DEBET ESSE INTENTIO 183 CERTIFICATE quae deducitur in judicium. The design and narration ought to be certain, and the foundation certain, and the matter certain, which is brought into court to be tried. Co. Litt 303a, CERTA RES. In old English law. A certain thing. Fleta, lib. 2, c. 60,