According to my research of Glagolitic records, the Perin family should be descendants of Peter Španjol, so they are one branch of the Španjol family, as well as the Franić family. The Franić family in Brbinj today are considered as members of Španjol family, although, as far as I know, it is not known why and after whom they are called the Franić family (the Franić family are descendants of Franić Španjol). Today, Perin family members are not considered part of the Španjol family in Brbinj. The old houses of the Španjol or the Franić family and the old house of the Perin family are in close proximity.

Petar Španjol, after whom the Perin family were named, had no children of his own, so he adopted a "mulac" (adopted child) who was also called Petar. There is a clear entry about this in the register of marriages of Brbinj parish from 1708, where the marriage entry reads: "... between Petar who was taken and raised by Peter Špano without knowing his father and between Manda the daughter of the late Šimun Štohera, both from the village of Brbina...". Therefore, it can be concluded that Petar Španjol adopted his son Petar at the end of the 17th century.

That the Perin family are a branch of the Španjol family can also be seen in the death register of the Brbinj parish, where the fact of the death was recorded in 1802 of Jivan Perin "deto" (called) Španol, in the register of births in 1796, the fact of the birth was entered of Osip of Blasul Perin "deto" (called) Španola and Stošia Pesić.

I find the surname Perin in the registers of Brbinj parish as early as 1762, when the birth of the child of Jivan Španolić "deto" (called) Perin and Mare is entered in the register of births. Španolića deto Perina and in the death register in 1764, when the fact of Mara's Perin death is entered Perin.

Before the surname Perin was used, the descendants of Petar Španjol were referred to by the surname Španolić or, more rarely, Bubina. In the list of souls of Brbinj parish from 1713, Pere Buba is entered between the Španol and the Brunčev family members, who I believe is actually Petar Španolić, i.e. Petar, after whom the Španolić family members were later called Perin. Perhaps it could be the nickname of Petar Španolić.

It is my assumption, the confirmation of which is still missing firm data because from 1613 to the middle of the 17th century we have no saved data from the registry books of Brbinj parish, that the elder Petar Španol is the son of Piero Spagnolo from the 1608 census. The personal name Petar was popular in the Španjol family in the 17th century, because we learn from the census of 1608 that the head of one of the Španjol families was then Piero or Petar. From the Book of Confirmations, we learn that Franić Španjol also confirmed his son Peter in 1651, so this Peter is Franić family member. In the same year, the confirmations of Klara and Ela, daughters of Petar Španol and Mara, were entered in the Book of Confirmations. So, at that time there is another Petar Španol who already has children and I believe that Peter is the older Petar Španol, the son of Piero Spagnola from the census and the father of the adopted Petar Španol, after whom this branch of the Španjol family is called first the Španolić or the Bubins and later Perin.

The fact that Petar Španjol took and raised the "mulac" (adopted child) Petar may also have influenced the fact that today the awareness that the Perin family are a branch of the Španjol family has been lost, as opposed to the Franićev family, who are still considered as Španjol family.

We can conclude that Španjolić are actually part of the Španjol family if we compare the following entries in the registry books: In the register of births, the birth of Manda was entered in 1742 of Matij Španolić and Matia Grgin, while in the registry of marriages in 1739, the marriage "between Matij son of Petar Španol and Matija, daughter of Grgur Tucić" (as explained before, I conclude that the Tucić are actually Grgin family). In 1755, the birth of Nikola from Ivan Španolić and Mara Hermanov, while in the registry of marriages in 1754 the marriage was entered "between Ivan son of Petar Španol and Mara, daughter of Matij Herman from Polje Punta Bianka". In the register of births in 1757, the birth of Ivan was recorded of Jure Španolić and Mare Brunca i Blasul of Ivan Španolić and Mara Herman, while in the register of marriages the marriages were registered in 1756 between Jure son of Petar Španol and Mar? Markova from Dragove and between Mara, daughter of Mikula Brunčić and Lucia Gržaneva from Sestrunj" and in the registry of marriages in 1754, the marriage "between Ivan son of Petar Španol and Mara, daughter of Matij Herman from Polje Punta Bianka". This Jure Španolić or Španol was entered in the Book of Chrisms in 1747 as the son of Petar Španolić and Mara Markova from Dragove.

In the register of births of Brbinj parish, in 1767, the birth of Ivan of Ive Perin and Jelena Baranov, while in the registry of marriages in 1764 the marriage was entered between Jivan sin of Petar Španolić and Mara Markova from Dragove between Jelena, daughter of Ivan Božulić from Brgulje and Matia Baranov from Brbinj" (as explained before, I conclude that Božulić from Brgulje came to the Baranov family). In the register of births of Brbinj parish, the birth was registered in 1765 of Franica of Ivan Španol and Jelena Božulić.

In the register of births, in 1797 the birth was entered of Anton of Mate Perin and Matija Galošić from Verona, and in 1804 the birth of Antona from of Mate Španol and Matija Galušićeva from Punta Bianche.

That at the end of the 18th and the beginning of the 19th century the Perin family were no longer considered part of Španjol family (genetically they are not Španjol) is shown by the marriage registration from 1834 between Jure Perin and Andrijana Španolova and between Mate Španol and Stošija Perin. So, the sister and brother of Andrijan Španol and Mate Španol both marry Perin family members, which means that they were no longer considered related.

As I wrote in the chapter about the Španjol and the Franićev family, in the Excerpts of the oldest register books of the parish of Brbinj, Petar Španjol is entered several times, whom I believe is the father of Petar Španjol, who raised a "mulac" (adopted child) of the same name, Petar, who continued his lineage.