Certified translation of bilingual Welsh certificates and Welsh-medium records for USCIS and the courts, plus Welsh interpreters, by phone or video, for the rare occasions they are needed.
Prism Linguistics provides certified English translation of bilingual Welsh and English certificates and Welsh-language school, chapel and legal records for USCIS and the courts across the United States, and Welsh interpreters, usually by phone or video, for the rare hearing, deposition or medical appointment where Welsh is genuinely needed.
Last reviewed September 2, 2026 by Sarah J, Prism Linguistics
Welsh is unusual on this site because almost nobody needs a Welsh interpreter, and quite a few people need a Welsh translation. Effectively every Welsh speaker also speaks English, so the interpreting requests that reach us are specific and few. The document work is steadier: a bilingual birth or marriage certificate where the entries were made in Welsh, a Welsh-medium school report, a chapel record. Our office is in New York, certified translations reach you wherever you are, and for the rare interpreting job we assign a linguist by phone or video, or in person where one is genuinely nearby.
The 2021 census found 538,300 people in Wales who can speak Welsh, about one in six, and every one of them also speaks English; the American Community Survey for 2017 to 2021 put roughly 2,000 Welsh home speakers in the United States. So no one books a Welsh interpreter because the speaker cannot manage in English. We will not pretend otherwise, and we will not invent a USCIS interpreting need that Welsh speakers do not have.
When Welsh interpreting is asked for, there is a reason. A speaker wants to give evidence or to marry in Welsh; a deposition needs a Welsh-language document read onto the record; an elderly Welsh speaker's English has receded with dementia and only the first language remains. No state runs a court certification exam in Welsh, so a court accepts a qualified Welsh interpreter, usually by phone or video, and a hospital that takes federal funds must provide one at no cost.
The Welsh court requests we see are narrow and real. A witness or a party chooses to testify in Welsh, which is their right at home and a request a US court can honor with a qualified interpreter, or a deposition turns on a will or contract drafted in Welsh that has to be read onto the record accurately. No state certifies Welsh court interpreters, so the court works from a qualified one, and Welsh is scarce enough that we are often the call. We take the booking from the attorney or the court and say plainly that Prism is a private agency working for the client, not a court-appointed vendor.
The Welsh medical booking is almost always about age and memory. An older Welsh speaker whose English has thinned with dementia falls back on the language of childhood, and a hospital on federal funds owes that patient a Welsh interpreter at no charge even though the family assumed English would serve. We handle most of these by video, which is quick to arrange and steady for a calm consultation. For an assessment where a patient does better with a person present, we send someone in where one can be found.
Because in-person Welsh interpreters are scarce across the country and the need is occasional, phone and video do most of this work. A video call brings a Welsh interpreter to a hearing, a deposition or a clinic visit within days, wherever the speaker lives, which suits the one-off nature of the requests. In-person attendance we arrange case by case for the settings that truly need it. Tell us why Welsh is needed and we match the assignment to it rather than sending a generalist.
Translation, not interpreting, is the everyday Welsh request, and it catches people out because their certificate already looks half English.
A Welsh birth or marriage certificate is often bilingual, and USCIS still wants every Welsh word on it rendered into English. Births and deaths in Wales can be registered in Welsh alongside English, on forms prescribed in both languages since 1987, so when the entry was made in Welsh the occupation, the place of birth and the informant's details are in Welsh even where the printed headings are not. Applicants assume a bilingual certificate needs nothing, and the officer disagrees. The other everyday jobs are a Welsh-medium school report, a degree transcript, a chapel record, or a will or contract drafted in Welsh. The recurring snag is the place name, one town written Caerdydd on one paper and Cardiff on another. We translate every Welsh entry in full, give both forms of a place name, spell personal names to the passport and sign a Certificate of Translation Accuracy. The full service is at certified translation.
Tell us the date, the city and the setting, or send a clear scan of the document. We reply with a fixed price and, for interpreting, a named linguist. Call +1 (833) 282 8883, email info@prismlinguistics.com, or use the quote form and you will hear back within 60 minutes during business hours.
Our only office is in New York, and our Welsh interpreters work nationwide. For in-person work we assign someone based in or near the city. These are the areas where Welsh work is concentrated; the full list of 288 cities is below it.
Prism Linguistics is rated 4.6 out of 5 across 67 client reviews for its interpreting and translation work in the United States. That is the company-wide figure; we do not publish a separate rating per language because there is no honest way to measure one. If a Welsh assignment ever falls short, tell us and we put it right.