diff --git a/lang/cy.json b/lang/cy.json
index 0a4e991291..88100d6952 100644
--- a/lang/cy.json
+++ b/lang/cy.json
@@ -703,7 +703,7 @@
     "companyEmailAddress": "Cyfeiriad e-bost y cwmni",
     "companyEmailAddressOptional": "Cyfeiriad e-bost y cwmni (dewisol)",
     "companyEmailHint": "Rhaid i hwn beidio â bod yn gyfeiriad e-bost unigolyn.",
-    "ifTheDetailsYouProvideAreNotCorrect": "Os nad yw’r manylion a roddwch yn gywir, mae’n bosibl na fydd sefydliadau’n derbyn yr LPA",
+    "ifTheDetailsYouProvideAreNotCorrect": "Gall unrhyw wallau yn eich manylion wneud yr LPA yn anodd ei ddefnyddio. Mae’n bosibl na fydd sefydliadau’n derbyn yr LPA os nad yw’ch manylion yn cyfateb i’ch data adnabod.",
     "ifUsePreviousAddressOrEnterNew": "os hoffech ddefnyddio cyfeiriad rydych eisoes wedi’i roi neu rhowch gyfeiriad newydd",
     "changeCompanyNameLink": "Newid<span class=\"govuk-visually-hidden\"> enw’r cwmni</span>",
     "changeCompanyNumberLink": "Newid<span class=\"govuk-visually-hidden\"> rhif y cwmni </span>",
@@ -970,7 +970,7 @@
     "whichLanguageWouldYouPreferWhenWeContactYou": "Pa iaith fyddai orau gennych i ni ei defnyddio pan fyddwn yn cysylltu â chi?",
     "en": "Saesneg",
     "cy": "Cymraeg",
-    "whichLanguageYouWouldLikeUsToUseWhenWeContactYou": "Welsh",
+    "whichLanguageYouWouldLikeUsToUseWhenWeContactYou": "pa iaith fyddai orau gennych i ni ei defnyddio pan fyddwn yn cysylltu â chi",
     "preferredContactLanguage": "Dewis iaith gyswllt",
     "addAnotherLpaIfInvited:donor": "Welsh",
     "addAnotherLpaIfInvited:attorney": "Ychwanegwch LPA arall os anfonwyd e-bost atoch yn eich gwahodd i fod yn atwrnai.",
@@ -1161,7 +1161,7 @@
     "supporterLPAContextPrimer": "<p class=\"app-supporter-lpa-context-banner__content govuk-!-font-weight-bold\">Welsh</p> <p class=\"app-supporter-lpa-context-banner__content\">Welsh</p>",
     "youAreDraftingDonorsLpa": "Welsh <span class=\"govuk-!-font-weight-bold\">{{ .DonorFullNamePossessive }}</span> Welsh",
     "youAreDraftingDonorsTypeLpa": "Welsh <span class=\"govuk-!-font-weight-bold\">{{ .DonorFullNamePossessive }} {{.LpaType}}</span> Welsh",
-    "addCorrespondent": "Welsh",
+    "addCorrespondent": "Ychwanegu gohebydd",
     "wouldYouLikeToAddCorrespondent": "Welsh",
     "supporterAddCorrespondentContent": "<p class=\"govuk-body\">Welsh</p>",
     "donorAddCorrespondentContent": "<p class=\"govuk-body\">Welsh</p>",
@@ -1190,7 +1190,7 @@
     "reportAConcernContent": "<h2 class=\"govuk-heading-m\">Welsh</h2> <p class=\"govuk-body\">Welsh:</p> <ul class=\"govuk-list govuk-list--bullet\"> <li>Welsh: 0115 934 2777</li> <li>Welsh: <a class=\"govuk-link\" href=\"mailto:opg.safeguardingunit@publicguardian.gov.uk\">opg.safeguardingunit@publicguardian.gov.uk</a> </li> </ul> <p class=\"govuk-body\">Welsh <a class=\"govuk-link\" href=\"#\">Welsh</a> Welsh</p>",
     "yourAddress": "Welsh",
     "yourAddressWarning": "Welsh",
-    "enter": "Welsh",
+    "enter": "Nodwch",
     "forFullName": "Welsh {{ .FullName }}",
     "enterDetailsOfPersonWhoWillVouch": "Welsh",
     "whoCannotVouchForYou": "Welsh",