- Author: M. D. Lachlan Author Record # 133430
- Legal Name: Barrowcliffe, Mark
- Birthplace: Coventry, West Midland, England, UK
- Birthdate: 14 July 1964
- Language: English
- Webpages: Goodreads, Twitter-1, Twitter-2, Wikipedia-EN
- Used These Alternate Names: Mark Alder, Mark Barrowcliffe
- Author Tags: historical fantasy (7), werewolf (2), immortality (2), demons (1), angels (1), norse mythology (1), WWII (1), deals with the devil (1)
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Novels
- Wolfsangel (2010)
- Fenrir (2011)
- Lord of Slaughter (2012)
- Son of the Morning (2014) [only as by Mark Alder]
- Valkyrie's Song (2015)
- Son of the Night (2017) [only as by Mark Alder]
- The Night Lies Bleeding (2018)
- The Devil's Blade (2020) [only as by Mark Alder]
- A Royal Gift (2017) [only as by Mark Alder]
- Suitably Strange: A Round-Table Discussion of World-Building (2012) with Tim Akers and Mark Chadbourn and K. V. Johansen and Jeremy L. C. Jones and Kay Kenyon and Justina Robson and Joel Shepherd
- Chairman's Chat (BFS Journal, #10) (2014) [only as by Mark Barrowcliffe]
- Chairman's Chat: Against Tits (BFS Journal, #11) (2014) [only as by Mark Barrowcliffe]