This document provides guidance on researching Welsh ancestry using key Welsh genealogical records. It begins with an overview of basic records like censuses, civil registration, church records, and probates. It then discusses specific record collections on sites like FamilySearch and Findmypast. The document offers research strategies, explaining the transition from patronymic naming practices to surnames. It also addresses challenges like common Welsh names, the Welsh language in records, and place-name variations. Overall, the document serves as a helpful introduction to researching Welsh ancestry through important records and recommended research approaches.