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Diana Cosby Complete Bibliography

Browse books by Diana Cosby in publication order, including standalone books, complete series lists, reading order, and publication years.

Updated 2026-07-11 / 14 books / 3 series

American author Diana Cosby is best known for her Scottish historical romance series, including the *MacGruder Brothers* and *Oath of Honor* novels. A former Navy meteorologist, her books have sold over one million copies and earned multiple award nominations. This page provides the Diana Cosby books in order, including both chronological and series reading order.

Books by Diana Cosby in Publication Order

2007 His Captive POoMBB / 1 Buy
2008 His Woman POoMBB / 2 Buy
2010 His Conquest POoMBB / 3 Buy
2011 His Destiny POoMBB / 4 Buy
2013 His Seduction POoMBB / 5 Buy
2013 His Enchantment POoMBB / 6 Buy
2014 An Oath Taken POoOTB / 1 Buy
2015 An Oath Broken POoOTB / 2 Buy
2015 An Oath Sworn POoOTB / 3 Buy
2016 Forbidden Legacy POoFB / 1 Buy
2017 Forbidden Knight POoFB / 2 Buy
2018 Forbidden Vow POoFB / 3 Buy
2019 Forbidden Alliance POoFB / 4 Buy
2020 Forbidden Realm POoFB / 5 Buy

Complete Diana Cosby Series Reading Order / browse all ->

Forbidden Reading Order 5 books / 2016-2020
01 Forbidden Legacy 2016 Buy
02 Forbidden Knight 2017 Buy
03 Forbidden Vow 2018 Buy
04 Forbidden Alliance 2019 Buy
05 Forbidden Realm 2020 Buy
Oath Trilogy Reading Order 3 books / 2014-2015
01 An Oath Taken 2014 Buy
02 An Oath Broken 2015 Buy
03 An Oath Sworn 2015 Buy
MacGruder Brothers Reading Order 6 books / 2007-2013
01 His Captive 2007 Buy
02 His Woman 2008 Buy
03 His Conquest 2010 Buy
04 His Destiny 2011 Buy
05 His Seduction 2013 Buy
06 His Enchantment 2013 Buy

Where to start with Diana Cosby

What is the best order to read Diana Cosby books?

Publication order is usually the safest place to start. If a book belongs to a series, follow the numbered series reading order shown on this page.

Are standalone books and series both included?

Yes. Standalone titles appear in the full chronological bibliography, and series are broken out separately with reading-order links when catalog data is available.

More authors

S.J. Bolton -> Oliver Potzsch -> Jimmy Sangster -> Matt Ruff ->

Source note: Sequencebooks organizes author, book, and series records from its catalog data. Publication years and series order are shown when available.