This is a belter of a book and is easily the best book on Aethelstan that I've read. It is probably going to be the standard work on him for years to come.
The chapters are loosely arranged in a chronological order, but also thematically, which isn't easy to do. Young life, court, kingdom, the church, warfare, death, British King?, memory, etc and a couple of appendices which show where he was when charters were signed or question the reliability of William of Malmesbury.
This book is extremely well footnoted; you can see exactly where Foot got her information from and not only that, but there are some useful explanatory notes present when there has been a small historical debate over one tiny aspect. This means that the text doesn't get bogged down and it's also great to see our own Ann Williams' expertise referenced in this book. Foot packs a lot into each sentence, so this isn't necessarily a fast read. She also expects a certain level of knowledge from the reader. Not masses of it, but the best example would be that she doesn't explain what a Charter is, but does explain that the 'proem' is the flowery preamble to a charter. To me, this made it an even better book. It is absolutely streets ahead of Paul Hill's book on Æthelstan, which despite being shorter, says almost as much about Alfred as he does Æthelstan. This starts with Edward the Elder being dead for a couple of pages (spoiler alert, he stays deceased) and then moves into the circumstances of Æthelstan and stays focussed on him throughout. It can be very disappointing to buy a book about one ruler and find that they are only a small part of the book, but that's not a problem here.
A lot of the information is taken from Charters and Foot makes great use of these, even to the extent of showing how a couple that invoked their recipients to give alms to the poor were issued over the festive period of 932. The ASC forms a fair part of this work, but Foot is happy to look further and find other sources to fill in the blanks, such as coin evidence, inscriptions in donated religious works and foreign sources. Her use of William of Malmesbury is good. She does point out that there is a problem in him often being the only source for some things and doesn't always follow him, especially where (such as with his account of the retaking and fortifying of Exeter) it goes against what we know. However, she does come down on the side of him having access to a now lost work and regards him as very useful for a lot of things, which is reasonable given her appendix entry discussing him. The examination of the three most likely locations for the battle of Brunanburh is interesting, but probably a moot point now that the discoveries near Bromborough have been made. Happily that is her favoured location. The section on court culture is fascinating. Æthelstan was certainly a big fan of poetry.
On the slight downside, it is mildly Wessex centred and has Edward the Elder fortifying Chester in 907 instead of Æthelræd and Æthelflaed, who seem more likely. Her comments about Ælfheah the Bald being so called because of his monastic tonsure, aren't that convincing. There were probably a lot of people with monastic tonsures, so I'm not sure that would be enough to distinguish him from all of the others that were bald for similar reasons, but could be wrong. There are some conflicting dates given for Frithestan and Beornstan as bishops of Winchester, but that's pretty minor. The comments about Sihtric coming to Tamworth in the centre of Æthelstan's territory are perhaps more questionable now that a coin of Sihtric's from the Vale of York hoard, minted at Rorivacastr has been found, IF this is indeed to be identified as Rocester on the Staffs/Derby border. As this would show that Sihtric's writ ran further south than was previously thought and that a meeting at Tamworth would be almost on the border. The chapter on relics was a bit dry, mostly because it felt like a sea of obscure names and places. Saint Paternus? No me, neither.
This is a book that is well worth buying and reading. You almost get a feel for the character of the king.
Three things you'll take away from this work:
1, Beowulf possibly written down, but probably not created during his reign.
2, the law code entry that references only one coin in the realm, along with provisions for shield making and the export of horses, etc, is probably interpolated and belongs to an earlier code from Edward the Elder's reign. It sits between parts of the Grately code, rather than being part of them.
3, William of Malmesbury probably did have access to a history now lost.