There are many indicators that the name d'Aguilar may be of Jewish origin, emanating from the Jewish communities of Spain and Portugal.
When the Romans conquered the Jewish nation in 70 CE, much of the Jewish population was sent into exile throughout the Roman Empire. Many were sent to the Iberian Peninsula. The approximately 750,000 Jews living in Spain in the year 1492 were banished from the country by royal decree of Ferdinand and Isabella. The Jews of Portugal, were banished several years later. Reprieve from the banishment decrees was promised to those Jews who converted to Catholicism. Though some converted by choice, most of these New-Christian converts were called CONVERSOS or MARRANOS (a derogatory term for converts meaning pigs in Spanish), ANUSIM (meaning "coerced ones" in Hebrew) and CRYPTO-JEWS, as they secretly continued to practice the tenets of the Jewish faith.
Our research has found that the family name d'Aguilar is cited with respect to Jews & Crypto-Jews in at least 5 bibliographical, documentary, or electronic references:
From the civil records of Amsterdam, The Netherlands
The Amsterdam Municipal Archives possess a complete set of registers of intended marriages from 1578 to 1811, the year when the present Civil Registry was started. Between 1598 and 1811, 15238 Jewish couples were entered in these books. Both the number of records and the volume of data that may be extracted from them are unprecedented.
Finding Our Fathers: A Guidebook to Jewish Genealogy, by Dan Rottenberg
In this work Dan Rottenberg shows how to do a successful search for probing the memories of living relatives, by examining marriage licenses, gravestones, ship passenger lists, naturalization records, birth and death certificates, and other public documents, and by looking for clues in family traditions and customs. Supplementing the "how to" instructions is a guide to some 8,000 Jewish family names, giving the origins of the names, sources of information about each family, and the names of related families whose histories have been recorded. Other features included a country-by-country guide to tracing Jewish ancestors abroad, a list of Jewish family history books, and a guide to researching genealogy.
Precious Stones of the Jews in Curaçao; Curaçaon Jewry 1656-1957, by Isaac Samuel Emmanuel (1957)
Names taken from 225 tombstones of 2536 persons, 1668 - 1859, men, women and some Rabbis. Includes cemetery history and plan, biographies including family histories, chronological list of names, alphabetical list of family names + number of members + eldest tombstone year, large bibliography, general alphabetical index, 15 genealogies.
The Jews of Jamaica, by Richard D. Barnett and Philip Wright.Oron Yoffe, Ben-Zvi Institute, Jerusalem, 1997.
The product of many years of painstaking research by two late scholars, Richard D. Barnett and Philip Wright, this volume presents the texts or summaries of 1456 tombstone inscriptions of Jews who lived in Jamaica between 1663, when the British ousted the Spanish, and 1880, when systematic registration of deaths was introduced. Jewish families who had fled the Inquisition in Spain and Portugal settled in Jamaica in increasing numbers during that time. Ashkenazic Jews also settled there in the eighteenth century. The Jews played a significant part in developing the island's natural resources and its international trade. Featuring detailed indexes by name, date and language, The Jews of Jamaica is a valuable tool for the study of immigration to the Americas, the surnames, given names and genealogy of Sephardi Jews. The texts of the inscriptions, many of them in three languages (Hebrew, English and Portuguese or Spanish), are of cultural interest and sometimes refer to dramatic events in the lives of the Jewish residents of Jamaica during a turbulent period.
Dicionario Sefaradi De Sobrenomes (Dictionary of Sephardic Surnames), G. Faiguenboim, P. Valadares, A.R. Campagnano, Rio de Janeiro, 2004
A bilingual (Portugese/English)reference book of Sephardic surnames. Includes New Christians, Conversos, Crypto-Jews (Marranos), Italians, Berbers and their history in Spain, Portugal and Italy. Contains over 16,000 surnames presented under 12000 entries, with hundreds of rare photographs, family shields and illustrations.It also contains a 72-page summary of Sephardic history, before and after the expulsion from Spain and Portugal, as well as a 40-page linguistic essay about Sephardic names, including an interesting list of the 250 most frequent Sephardic surnames. The period covered by the dictionary is of 600 years, from the 14th to the 20th century, and the area covered includes Spain and Portugal, France, Italy, Holland, England, Germany, Balkans, Central and Eastern Europe, the former Ottoman Empire, Morocco, Algeria, Tunisia, Libya, Egypt, Iraq, Yemen, Syria, Lebanon, Israel, North America, Central America and the Caribbean, South America and more.
Around the 12th century, surnames started to become common in Iberia. In Spain, where Arab-Jewish influence was significant, these new names retained their old original structure, so that many of the Jewish surnames were of Hebrew derivation. Others were directly related to geographical locations and were acquired due to the forced wanderings caused by exile and persecution. Other family names were a result of conversion, when the family accepted the name of their Christian sponsor. In many cases, the Portuguese Jews bear surnames of pure Iberian/Christian origin. Many names have been changed in the course of migration from country to country. In yet other cases "aliases", or totally new names, were adopted due to fear of persecution by the Inquisition.
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