This author also writes under the pseudonym of Roxanne Morgan Excerpted from Wikipedia: Mary Gentle's first published novel was Hawk in Silver (1977), a young-adult fantasy. She came to prominence with the Orthe duology, which consists of Golden Witchbreed (1983) and Ancient Light (1987). The novels Rats and Gargoyles (1990), The Architecture of Desire (1991), and Left to His Own Devices (1994), together with several short stories, form a loosely linked series (collected in White Crow in 2003). As with Michael Moorcock's series about his anti-heroic Jerry Cornelius, Gentle's sequence retains some basic facts about her two protagonists Valentine (also known as the White Crow) and Casaubon while changing much else about them, including what world they inhabit. Several take place in an alternate-history version of 17th century and later England, where a form of Renaissance Hermetic magic has taken over the role of science. Another, Left To His Own Devices, takes place in a cyberpunk-tinged version of our own near future. The sequence is informed by historically existing ideas about esotericism and alchemy and is rife with obscure allusions to real history and literature. Grunts! (1992) is a grand guignol parody of mass-market high fantasy novels, with orcs as heroes, murderous halflings, and racist elves.
Series
Books

Left to His Own Devices
1994

Ilario
The Stone Golem
2007

A Hawk in Silver
1985

Worlds That Weren't
2002

A Secret History
1999

Grunts
1992

Rats and Gargoyles
1990

The Wild Machines
2000

Ancient Light
1988

Cartomancy
2004

Under the Penitence
2004

Lost Burgundy
2000

A Sundial in a Grave
1610
2003

Ash
A Secret History
2000

Golden Witchbreed
1983

The Black Opera
2012

Ilario
The Lion's Eye
2007

Scholars and Soldiers
1989

Carthage Ascendant
2000