Complex sentence: Cornwell and wife Judy co-wrote a series of novels published under the pseudonym "Susannah Kells": "A Crowning Mercy" published in 1983, "Fallen Angels" in 1984, and "Coat of Arms" (aka "The Aristocrats") in 1986.
Split into simpler sentences: Cornwell and wife Judy co-wrote a series of novels, published under the pseudonym "Susannah Kells". These were "A Crowning Mercy", published in 1983, "Fallen Angels" in 1984, and "Coat of Arms" (aka "The Aristocrats") in 1986.