[quote="Ignatius, post:1, topic:34662"]
I'm looking for information on the translators Roberts-Donaldson and cannot find anything although thier names are signed on almost every early Church Greek document translations.
They edited a series called the "Ante-Nicene Christian Library." Wikipedia says that they did so in response to the "Library of the Fathers" edited by members of the Oxford Movement (in other words, Anglicans who were arguing for the Catholic nature of Anglicanism and trying to move Anglicanism in a more Catholic direction, based on the Fathers). Roberts and Donaldson were producing a Protestant alternative. Their work was then edited by an American Episcopal bishop, A. Cleveland Coxe. As you can see from the Wikipedia article on him, he spent a lot of his career arguing with Catholics, and it shows from his very pugnacious notes. He criticizes Roberts and Donaldson in an "Elucidation" to Book III of Irenaeus' Against Heresies, because they had rendered the key passage on Rome in a way that seemed to support the claims of Roman primacy. Coxe provides his own translation, which he says is supported by a Catholic scholar (I haven't looked into that claim myself). It's an interesting debate which helps give readers a sense of how tricky the passage in question is, and it should increase confidence in Roberts and Donaldson, since their own bias would be the same as Coxe's, yet they translated it in a sense that seems to support the Catholic position.
The later Nicene/Post-Nicene Fathers series was overseen by Philip Schaff, one of the greatest church historians of the 19th century.
The series has the advantage of being easily available in the public domain. It is not ideal for serious study, but it's sometimes the best one can do.
The best English series of patristic translations are Ancient Christian Writers (Paulist Press) and Fathers of the Church (Catholic University of America). As you can see, both of these are Catholic. Unfortunately, they are not widely available outside good academic libraries.
The Library of Christian Classics and the Classics of Western Spirituality also have good editions of many patristic writings.
A more complete list of available versions is found here. (The entire bibliography of which this is part, by Fr. William J. Harmless, is invaluable.)