Is Si short for anything?
Yes. Si is a nickname in most old records, and it usually points to Silas. Less often it stands in for Simon, Simeon, and Josiah, among others. Expect it in American records, mostly 1700s-1800s. A record that says Si and a record that says Silas can easily be the same person, so search both names before you rule anyone out.
Loading tool…
Looking for what Si is short for? See the full breakdown.
The finder above is preloaded with this name. Search any other nickname or formal name to trace a variant, or open the full nickname finder.
FAQs
Is Si a nickname?+
In old records, almost always - it stands for Silas or Simon. Treat it as a pointer to a formal name until the documents prove otherwise.
Is Si a real name on its own?+
It mostly rode on Silas in the eras we track (1700s-1800s). If your ancestor's papers only ever say Si, record it as written and keep Silas as a candidate.
How does this nickname lookup work?+
It searches a curated dataset of historical nickname-to-formal-name mappings - in both directions - entirely in your browser. Nothing you type is uploaded or stored on our servers.
Start with one relative and see what comes back.
Add what you remember and AncestorIQ searches for the rest. Free to build your tree for as long as you like.
No credit card needed. Your tree stays yours.


