With a summary in English. This study deals with the works published during Secundus' lifetime, and with the poems on the death of Thomas More that appeared in 1536 shortly after he died. The incentive to carry out the research was the discovery of an unknown manuscript of Secundus' collected poems in the Bodleian Library, Oxford (MS. Rawl, G.154), used as the printer's copy for the editio princeps of Secundus' poems, posthumously published at Utrecht in 1541.