Abstract: The subject of the study is the literary relationship of Baron E. F. Rosen (1800-1860) – poet, playwright, translator and critic, author of the libretto for the opera by M. I. Glinka "Life for the Tsar" (1836) – with the Pushkin circle. The object of the study was the history of Rosen's collaboration in Sovremennik (1836). The material was Rosen's publications in the Pushkin magazine and his correspondence of the 1830s. Special attention is paid to Pushkin's assessments of Rosen's work. Rosen's works published in Sovremennik are analyzed: the article "On Rhyme" and a fragment from the historical tragedy "The Daughter of John III". It is considered which of the writer's materials Pushkin printed and which he rejected, in accordance with the magazine's program. The novelty of the research lies in a holistic analysis of Rosen's participation in Pushkin's Sovremennik, which has not been conducted before. As a result, it turns out that Rosen is close to Pushkin and his entourage in some literary assessments (the problem of rhymeless verse, the work of N. V. Kukolnik). It is shown that Pushkin did not accept Rosen's acrimonious articles, not wanting to turn Sovremennik into a platform for magazine abuse. At the same time, Pushkin was genuinely interested in Rosen's dramatic work. He placed in the magazine an excerpt from the tragedy "The Daughter of John III", in which John III and Aristotle Fioravanti are having a conversation about politics, probably noticing in it a roll call with "Boris Godunov".