The name Sebag is of Arabic origin.
The English meaning of Sebag is Dyer
There are many indicators that the name Sebag 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 Sebag is cited with respect to Jews & Crypto-Jews in at least 5 bibliographical, documentary, or electronic references:
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.
Bevis Marks is the Sephardic synagogue in London. It is over 300 years old and is the oldest still in use in Britain.The Spanish and Portuguese Jews' Congregation of London has published several volumes of its records: they can be found in libraries such as the Cambridge University Library or the London Metropolitan Archive
ETSI (a Paris-based, bilingual French-English periodical) is devoted exclusively to Sephardic genealogy and is published by the Sephardi Genealogical and Historical Society (SGHS). It was founded by Dr. Philip Abensur, and his professional genealogist wife, Laurence Abensur-Hazan. ETSI's worldwide base of authors publish articles identifying a broad spectrum of archival material of importance to the Sephardic genealogist. A useful feature of ETSI is the listing, on the back cover, of all Sephardic family names, and places of origin, cited in the articles contained in each issue
This is a genealogical masterpiece written in Portuguese concerning Sephardic families from Portugal and Gibraltar. There are five volumes that provide genealogical information on families that in fact lived on the west part of the Mediterranean basin and not only Portugal and Gibraltar. The work contains a list of names of Sephardic families that returned to Portugal and Gibraltar after hundreds of years of expulsion. It has also a very rich photographic documentation.
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.
The following website is relevant to the surname Sebag: