Amstelodami [ Amsterdam ]: Joannis Henrici Boom 1668. , 404, , [2-blank], 38 pages. Small 8vo (4 1/2 x 6 1/2 inches). Full vellum with red spine label. Previous owner name inked on front endpaper. Near Fine. Vellum. 
"Petrus Peckius the Elder (born Pieter Peck, Zierikzee, 16 July 1529; died Mechelen, 16 July 1589), also known as Pierre Peckius, was an eminent Netherlandish jurist, one of the first to write about international maritime law (David M. Walker (ed.), The Oxford Companion to Law (Clarendon Press, 1980), p. 940.)
Peck studied Civil and Canon law at the University of Leuven with Gabriel Mudaeus. He received his doctorate on 27 August 1553. As usual in this era for academic scholars he Latinized his name to Peckius. He was appointed to the new chair in introductory law (Paratitles) that Philip II of Spain endowed at the university in 1555. Was made ordinarius in Roman Law at the university in 1562. In the same year he succeeded Jean Vendeville, who had left for the University of Douai, as professor of Canon law." (wikipedia)
This book, a commentary on naval law, was first published in Leuven in 1556 with the title "Commentaria in omnes pene Juris Civilis titulos ad rem nauticam pertinentes" , and again in Lyon in1647 before this, the Amsterdam 1668 edition.