Good Day, All
There are some very historical quotes by the ECF's on this issue. It does seem though "some" RC's have to up date their scholarship on this issue.
Raymond E. Brown: Some Roman Catholics may have expected me to include a discussion of the historicity of the Immaculate Conception and the Assumption of Mary. But these Marian doctrines, which are not mentioned in Scripture, clearly lie outside my topic which was the quest for historical knowledge of Mary in the NT. Moreover, I would stress the ambiguity of the term “historicity†when applied to these two doctrines. A Roman Catholic must accept the two dogmas as true upon the authority of the teaching Church, but he does not have to hold that the dogmas are derived from a chain of historical information. There is no evidence that Mary (or anyone else in NT times) knew that she was conceived free of original sin, especially since the concept of original sin did not fully exist in the first century. The dogma is not based upon information passed down by Mary or by the apostles; it is based on the Church’s insight that the sinlessness of Jesus should have affected his origins, and hence his mother, as well. Nor does a Catholic have to think that the people gathered for her funeral saw Mary assumed into heavenâ€â€there is no reliable historical tradition to that effect, and the dogma does not even specify that Mary died. Once again the doctrine stems from the Church’s insight about the application of the fruits of redemption to the leading disciple: Mary has gone before us, anticipating our common fate. Raymond E. Brown, Biblical Reflections on Crises facing the Church (New York: Paulist Press, 1975), p. 105, fn. 103.
Brown by no means would be considered non-RC, in fact he was the top scholar in the RCC before his passing.
"Raymond E. Brown, S.S., born in 1928 and ordained in 1953, has been recognized by universities in the U.S.A. and Europe by some twenty honorary doctoral degrees. He was appointed by Pope Paul VI to the Roman Pontifical Biblical Commission, and with church approval he has served for many years on the Faith and Order Commission of the World Council of Churches. Time magazine once described him as 'probably the premier Catholic scripture scholar in the U.S.,' and he is the only person to have served as president of all three of these distinguished societies: the Catholic Biblical Association, the Society of Biblical Literature, and the Society of New Testament Studies."
Peace to u,
Bill