Alderley

Wikipedia covers the series in three articles; the first is linked here as a point of entry.
Kirkus Reviews displays the full titles • The Weirdstone of Brisingamen: A Tale of Alderley • The Moon of Gomrath: A Tale of Alderley --as its contemporary reviews of the 1st US eds. are posted online (2012) with later cover images, page counts, and ISBN.
Garner "has lived all his life near Alderley Edge, Cheshire, the setting for nearly all his fiction. ... Most of his work is Fantasy, rooted in his knowledge of local archaeology and the lore of the region. His first two books form the Alderley Edge series for children: The Weirdstone of Brisingamen: A Tale of Alderley (1960) [...] and The Moon of Gomrath (1963), followed many years later by Boneland (2012), in which Colin, the co-protagonist of the original tales, is now 30 or 40 years older – a troubled astrophysicist (and also a kind of shaman with a responsibility to care for Alderley Edge) whose Amnesia blocks his childhood life, and who recovers that life and its meaning." --SFE3, biographical entry by editors Nicholls, Clute, and Langford

For greater coverage of the series, represented by the first two novels only, see the entry by Clute in Encyclopedia of Fantasy (1997), linked above.

Titles (5)

#	Title	Author(s)	Year	Type
1	The Weirdstone of Brisingamen	Alan Garner	1960
2	The Moon of Gomrath	Alan Garner	1963
3	Boneland	Alan Garner	2012
	By Seven Firs and Goldenstone: An Account of the Legend of Alderley	Alan Garner	2010	Nonfiction
	The Weirdstone of Brisingamen and The Moon of Gomrath	Alan Garner	2015	Omnibus