Marrying close to home.

Anyone who has spent time in the parish books of San Giovanni Evangelista learns the same lesson we did while indexing them: in a town the size of Sassano, tucked in the hills 95 miles southeast of Naples, everyone eventually married a relative. Not out of scandal, but out of geography. For centuries the town's marriageable population was, quite literally, whoever lived within walking distance — and more often than not, that meant a cousin.

Using the full Sassano-Bompietro family tree — now over 29,401 individuals and 7,446 families as new records keep getting indexed — we set out to see just how common this really was, and whether it followed the Sassanesi all the way to Federal Street.

It did, and more than we expected.

Of the 5,940 marriages in the tree where both spouses' parentage could be traced, 1,228 were between blood relatives close enough to identify: first cousins, second cousins, third cousins, or fourth cousins, some with a generation's remove between them. The overall share edges up to 20.67%, from 20.55% last update: eighteen cousin marriages joined the count, sixteen of them in newly added families and two — Loreto Carlo and Veneranda Barbara Petrizzo (1819) and Francesco Cavallone and Filomena di Bella (1912) — in families already in the tree, newly linked to a shared ancestor. One marriage left it: Gioacchino Petrizzo and Rosa Battista, third cousins once removed, no longer qualify after duplicate Battista records were merged and Rosa's parentage moved to a different family, for a net gain of seventeen. The newcomers run from an 1819 fourth-cousin marriage to a 1949 first-cousin-once-removed match (Vito Rubino and Agnesa Rubino), and Rubino grooms account for four of the eighteen. The first-cousin count rises again, to 29, with the marriage of Giuseppe di Lisa and Giustina Pinto on 10 Sep 1892.

What surprised us more was how often it repeated. 799 people in the tree are both the child of a cousin marriage and went on to marry a cousin themselves — three, sometimes four consecutive generations of the same two family lines marrying back into each other, rather than a single instance diluted by outside blood.

And it wasn't left behind when the Sassanesi crossed the Atlantic. Sixty-two of these cousin marriages involve a bride or groom who eventually settled, married, or died in Chicago; another 45, though they took place back in Sassano, produced children who made the crossing themselves. All told, roughly one cousin marriage in ten connects to the Federal Street enclave.

Some of the names will be familiar to anyone who has followed our Home page and Families list. Pietro Abbatemarco and Francesca Trotta, one of the earliest couples in our founding family records, were third cousins. Gabriele D'Amato and Maria Rosa Ricciardone were third cousins as well — a marriage that took some untangling, since Maria Rosa turned out to have married twice: first D'Amato in Sassano in 1889, then, evidently widowed, Michele Riccio in Chicago in 1898. Closer to home for this site's author: Francesco Cavallone and Rosa Libretti, married in Sassano on 22 Jan 1899, were first cousins once removed — Antonia Francesca di Bella was Francesco's grandmother and Rosa's great-grandmother. Francesco is the same great-grandfather whose long-sought birth record — and the brick wall it finally brought down — is described on the About page.

None of this is unusual for a town like Sassano, and we don't share it to cast any judgment on any family, ours included. Small, isolated communities the world over — mountain villages, island populations, tightly bound immigrant enclaves like the one on Federal Street — show this same pattern, for the same plain reason: the pool of people you were likely to meet, court, and marry was small, and church and family kept you close to those you already knew. For most of Sassano's history, marrying within one's own extended kinship network wasn't the exception. It was close to the rule.

It's worth a brief, honest word on what that can mean medically. Modern genetics tells us that closely related couples have a somewhat higher chance of passing the same rare gene to a child, nudging the risk of certain inherited conditions upward — for first cousins, roughly from a general-population baseline of 3–4% to something closer to 4–6%. The effect fades quickly with distance; second, third, and fourth cousins are genetically close to unrelated pairs. Where it can matter more is exactly the pattern we found here — the same two lines intermarrying across several generations running — which is one thread, among several including poverty, poor sanitation, and limited medical care, that may help explain the high rate of infant and child death visible elsewhere in these records. It is context, not a diagnosis of any one family or descendant.

Mostly, what the numbers tell us is a story we already knew in outline: for two centuries, Sassano was a place small enough that nearly everyone was, in some fashion, everyone else's cousin — and that closeness is written into nearly every family line that eventually found its way to Federal Street. The share has now settled at roughly one marriage in five, even as hundreds more individuals keep being added.