Every genealogist eventually encounters a document that changes everything.

While reviewing the parish registers of Toa Alta, Puerto Rico, I came across one of the most unexpected baptismal records I have ever seen. Rather than documenting the baptism of a local child, the priest recorded the baptism sub conditione of an adult enslaved man named Tomás Julián, approximately thirty years old and identified as a native of Philadelphia, North America.

That single statement immediately raises an extraordinary historical question:

How did a man born in Philadelphia become enslaved in Spanish Puerto Rico?

The answer lies within the complex and often overlooked connections between the United States, the Caribbean, and the Atlantic slave trade.

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The Baptism Record

According to the parish register, Tomás Julián was:

• approximately thirty years old
• born in Philadelphia
• son of José María de la Rosa and María de N.
• enslaved by Antonia de Rivera, widow of Pedro Franco
• baptized in Toa Alta because there was uncertainty regarding whether he had previously received a valid Christian baptism.

The phrase “sub conditione” is especially significant.

In Catholic practice, this form of baptism was administered when there was doubt about whether a person had already been validly baptized. Rather than baptizing someone twice, the Church performed a conditional baptism “if necessary.”

For an adult arriving from another country or colony, this was not unheard of, but it was certainly uncommon.

Transcription (Spanish)

En la Rivera de Toa Alta, el día cuatro de noviembre del año de mil ochocientos veinte y uno, yo el Presbítero D. Joseph María Martínez, Cura Rector de esta Parroquia, bauticé sub conditione, puse óleo y chrisma a Tomás Julián, como de treinta años de edad, natural de Filadelfia, en el Norte América, hijo de José María de la Rosa y de María de N., negro esclavo de Antonia de Rivera, viuda de Pedro Franco; fue su padrino José Pacheco, y le advertí el parentesco espiritual y las obligaciones que de él se siguen.

Joseph María Martínez
firma

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English Translation

In La Rivera de Toa Alta, on the fourth day of November in the year 1821, I, Rev. José María Martínez, Pastor of this parish, baptized conditionally, and administered the holy oils and chrism to Tomás Julián, about thirty years of age, a native of Philadelphia, North America, son of José María de la Rosa and María de N., a Black enslaved man belonging to Antonia de Rivera, widow of Pedro Franco. His godfather was José Pacheco, and I informed him of the spiritual kinship and the obligations arising from it.

Joseph Maria Martinez
signature

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Was Philadelphia a Slave Port?

Many people associate slavery in North America with the southern states. However, slavery also existed in Philadelphia during the eighteenth century.

Pennsylvania gradually abolished slavery beginning in 1780, but many enslaved people remained in bondage for decades afterward under transitional laws. At the same time, Philadelphia was one of the busiest ports in the young United States and maintained commercial connections with ports throughout the Caribbean.

Being described as “natural de Filadelfia” does not necessarily mean Tomás Julián was free.

He may have been:

• born enslaved,
• born to enslaved parents,
• illegally trafficked,
• sold through Caribbean commercial networks, or
• transported after changing owners.

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The Atlantic Connections Between Philadelphia and the Caribbean

During the late eighteenth and early nineteenth centuries, American merchant vessels sailed regularly between Philadelphia and the West Indies.

These ships transported:

• flour
• lumber
• livestock
• salted meat
• manufactured goods

In return they brought back:

• sugar
• molasses
• coffee
• rum

While these commercial routes primarily carried legal cargo, enslaved people also moved throughout the Atlantic world under various legal systems and commercial arrangements. American merchants maintained extensive commercial relationships with Spanish, French, British, and Dutch Caribbean colonies.

Because Puerto Rico remained under Spanish rule, it participated in a different legal framework than the United States, yet commercial connections continued to exist.

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A Rare Reverse Movement

Historians usually study the Atlantic slave trade as a movement from:

Africa → Caribbean → North America

or

Africa → Caribbean → South America.

Tomás Julián’s record documents something different.

His life reflects movement in the opposite direction:

Philadelphia → Puerto Rico

Although not part of the massive transatlantic trade from Africa, this represents a secondary movement within the broader Atlantic slave system.

These individual transfers are much less documented and are therefore particularly valuable for genealogical research.

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Why Would an Enslaved Man Leave Philadelphia?

Several historical explanations deserve consideration.

1. Sale Through Caribbean Commerce

Enslaved individuals were occasionally sold through interconnected Atlantic commercial networks.

A merchant or private owner could relocate enslaved laborers to another colony where labor demand was greater.

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2. Transfer by a Private Owner

Families relocating between ports sometimes transported enslaved servants with them.

If an owner settled temporarily or permanently in Puerto Rico, enslaved household members could accompany them.

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3. Purchase by Spanish Residents

Spanish merchants conducted business with American ports despite periodic political tensions.

An enslaved person could have been legally—or illegally—purchased through commercial intermediaries.

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4. Maritime Capture

The Atlantic during the late eighteenth and early nineteenth centuries was marked by wars, embargoes, and privateering.

Captured vessels occasionally resulted in enslaved people being redistributed through different colonial jurisdictions.

While no evidence currently links Tomás Julián to such an event, the broader historical context makes this a possibility worth exploring.

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Why Was He Baptized?

The baptism may indicate that church authorities questioned whether Tomás Julián had previously received a valid Catholic baptism.

Philadelphia’s religious landscape was overwhelmingly Protestant during this period.

If Tomás Julián had been raised outside the Catholic Church—or if no reliable evidence of baptism existed—a conditional baptism ensured his acceptance into the Catholic faith without violating Church doctrine.

This explains the notation sub conditione in the parish register.

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What Makes This Record Exceptional?

Thousands of Puerto Rican baptismal records identify enslaved people.

Very few identify them as natives of a city in the United States.

Even fewer provide:

• an exact birthplace,
• both parents’ names,
• the enslaver’s identity,
• the owner’s marital status,
• and the circumstances of a conditional baptism.

These details transform a routine parish entry into a remarkable piece of Atlantic history.

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Questions That Still Need Answers

This single baptism opens numerous research avenues.

Future investigation may include:

• locating Tomás Julián in Philadelphia records;
• searching shipping manifests between Philadelphia and the Caribbean;
• identifying Antonia de Rivera and Pedro Franco in Puerto Rico;
• examining notarial records documenting slave purchases or inheritances;
• reviewing estate inventories;
• studying customs records and merchant correspondence;
• comparing this record with other adult conditional baptisms in Puerto Rico.

Each additional document may reveal another chapter in Tomás Julián’s journey across the Atlantic.

Unfortunately, records for Toa Alta are difficult to research. As of this writing, I have not located any marriage or death records for Tomás Julian. If I do come across one, I will update this post.

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A Window into the Atlantic World

Genealogy often begins with names and dates.

Occasionally, however, one parish record reveals an entire world of migration, commerce, religion, and human suffering.

The baptism of Tomás Julián reminds us that the Atlantic slave system extended far beyond the direct voyages from Africa. Individuals also moved between colonies and nations through commercial exchange, inheritance, private ownership, and maritime trade. His journey from Philadelphia to Toa Alta illustrates how interconnected the Atlantic world had become by the early nineteenth century, and how a single sacramental record can illuminate a much larger historical story.

Here are some additional resources involving the Slave Voyages. Click

This area of my website holds information about Puerto Rico Slavery

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Continue Your Puerto Rican Genealogy Journey

Researching Puerto Rican family history often requires consulting multiple historical sources. Explore additional church records, civil registrations, immigration records, military documents, and exclusive genealogy resources available throughout my website.

Continue your research here:
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