A text appears under a famous name in a catalogue or anthology. Before using that name as an established author, read how the source describes the attribution.
Preserve qualifying language
“Attributed to,” “traditionally associated with” and an unqualified author field do not necessarily express the same level of confidence. Copy the relevant qualification into your notes. Check whether the description concerns a manuscript heading, a later tradition or a modern scholarly proposal.
Ask what supports the connection
An introduction may discuss language, references, transmission or other evidence. Follow the argument rather than treating fame as a reason the attribution must be correct. If you have only a short catalogue entry, acknowledge that limited basis.
When writing a summary, separate what the text says from what is claimed about its authorship. You can study a passage without resolving every attribution debate. A careful phrase such as “the text transmitted under this name” may preserve the historical association while avoiding a certainty your source does not provide.