She was a Dame of the Ordo Supremus Militaris Templi Hierosolymitani, a High Priestess in a Celtic Pagan tradition and a member of Mensa.

[2][3] Kennealy-Morrison was born in Brooklyn, New York on March 4, 1946,[2][3] the daughter of Genevieve Mary (McDonald) and Joseph Gerard Kennely,[4] and reared on Long Island in the hamlet of North Babylon.

After her college graduation at age 21, she moved to New York City, where she worked first as a lexicographer for Macmillan Publishing, then as an editorial assistant, and, from 1968 to 1971, editor-in-chief of Jazz & Pop magazine.

[8][18] Kennealy-Morrison served as an advisor to Oliver Stone for the 1991 film The Doors, making a small cameo appearance as the High Priestess who marry the Jim and Patricia characters (Val Kilmer and Kathleen Quinlan).

[3] In 2000, Robin Ventura, third baseman for the pennant-winning New York Mets, took the phrase "Mojo Risin" from the Doors' "L.A. Woman" and made it the rallying cry for the team that year.

The author had said that she wished to make a distinction between her Celtic fantasy novels and the murder mysteries, so decided to use different versions of her name rather than an invented pen name.

Additionally on LQP are Rock Chick: A Girl and Her Music (2013), a collection of PKM's writings originally published in Jazz & Pop magazine, Tales of Spiral Castle: Stories of the Keltiad (August 2014), a short-story collection set in her Keltiad world, and the forthcoming Son of the Northern Star, a fictional account of the great conflict between the Viking king Guthrum and Alfred the Great.

Ungrateful Dead introduces the protagonist, Rennie Stride, rock reporter/detective, and her boyfriend (later husband) Turk Wayland, superstar English lead guitarist.

Kennealy-Morrison has described the series as: Seamlessly blending the fictional with the real: the stars, the bands, the music, all the excitement of the most incredible decade of the last century ... Full of rockworld dish and attitude, created by someone who was not only there for it but made some of it happen herself, and who took just enough drugs to get into it and not so many that she can't remember it ...[23]Ungrateful Dead was published on November 1, 2007, to coincide with both the Day of the Dead and The Celtic New Year.