The Royal Books (Libri Regii) preserved in the Hungarian National Archives were kept in the Chancery and contained a copy and records of all significant deeds. Significant deeds included the so-called royal pardon charters providing eternal, fundamental rights and privileges. The charters had a broad range of subject: donating land or property, granting or depriving of hereditary prerogatives influencing the social status of the individual (peerage, nationality), granting a post or title (chief ispan, royal, councilor, pontificate), privileges granted for public bodies (counties, towns, parishes, church establishments). The right to hold markets in towns and villages, exemption from taxes and duties, guild letters, and company statutes can all be foundin the Royal Books. They include the royal consents necessary for a large number of private documents dealing with e.g. selling and donating propery, wills, adoptions; documents related to various legal issues (postponing a trial, granting pardon, marriage permit), industry and trade patents, principal decisions. However, there are a few shortcomings of the volumes: the chronological order of the entries is not strict, and issues related to granting nobility (except peerage and nationality) had not been recorded before 1690, they only became a regular feature after 1718. Shortcomings are obvious not only in the field of granting nobility. There is no proof that all the documents issued by the Chancery were copied into the books. The conditions in the 16th-17th century are unknown, but according to 18th century regularions the party receiving the charter had to pay a fee.

The 67 volumes of the Royal Books in the Hungarian Chancery in Vienna covering the period between 1527 and 1848 (1867) record important facts from three and a half centuries (The Transsylvania Chancery contains 16 volumes, covering the period between 1690 and 1867.) Accessibility of the facts recorded in the books was of practical relevance already at the time when they were written, so early in the 1700's an alphabetical register (by names and topics) was added to each. Later even thematic registers were prepared focusing on certain topics. The archives of the Hungarian and theTranssylvanian Chancery were moved to Budapest in 1872, except fort he Royal Books, which remained in Vienna in the personal ministry of His Royal Highness. Only after 22 years of intensive negotiations were they moved to the Hungarian National Archives on condition that a register (of names and topics) is prepared about the nobility issues includedin them. The register came out in book format in 1895: A Királyi Könyvek. Jegyzéke a bennük foglalt nemesség, czím, czímer, el?név és honosság adományozásoknak, 1527-1867. A M. Kir. Orsz. Levéltár felügyelete alatt összeállították Dr. Illéssy János és Pettkó Béla. (The Royal Books. Register of the cases granting nobility, titles, crests,prefixes and nationality, 1527-1867. Compiled by Dr. Illéssy János és Pettkó Béla under supervision from the Hungarian Royal National Archives). Other thematic lists were also compiled from the material in the Royal Books: Vásárszabadalmak jegyzéke (List of Market Patents). A Királyi Könyvekb?l összeállította Dr. Illéssy János. Budapest, "Pátria" Irodalmi Vállalat és Nyomdai Részvénytársaság, 1900. 26 l.

Községi kiváltságlevelek jegyzéke.(Letters of Privileges for Villages) A Királyi Könyvekb?l összeállította Dr. Illéssy János, Budapest, "Pátria" Irodalmi Vállalat Részvénytársaság Nyomdája, 1898. 41 l.

Titles relevant for the Latinovits family: