I must say I know very little to almost nothing about Herbert Fowler but at the same time he would probably be in the 1/4 of a handful of architects I'd truly like to know a great deal about.
Cornish and Whitten give Fowler both a good deal of space and treatment in their tome as one of the truly significant ones of the so-called "Heathland architects" that any real serious student of architecture should be as well versed on as possible, in my opinion. The reason for that is the true significance and the influence on the evolution of golf architecture of those so-called "Heathland architects".
Park, Fowler, Colt, Alison, Abercromby, Mackenzie et al!
C&W had this to say about Fowler;
"Herbert Fowler was perhaps the most gifted architect of his time," (and that was in a section of their book that treated all the "Heathland architects" and others),
and that remark was followed by a quote of Darwin's on Fowler;
"I never knew anyone who could more swiftly take in the possiblilites of a piece of ground."
I'd like to know a lot more about Fowler and I'd like to know a lot more about Abercromby, and Colt and Alison too. I do know a few things about Alison and only regarding a few specifics but he seemed to me to be truly impressive, perhaps as much as any of them.
Regarding Fowler C&W had this to say;
"His creation (his first one on which he spent two solid years!) which opened in 1904, was called Walton Heath; it attracted even more attention than Park's Sunningdale had three years earlier."
And C&W had this to say about all of them;
"They also realized that where a satisfactory natural contour could be utilized in the design of a hole, it should be used. But where none existed, naturally appearing sites for greens, tees, landing areas and even bunkers could be created by man."
"The competent designers in this period recognized that aesthetics are an intrinsic part of the game of golf. When designing a course these men subdued harsh natural features. They encorporated trees into the design of certain holes. They abhored geometrically shaped greens and hazards and built theirs to blend into the surrounding terrain."
This is all clearly the first and best true and dedicated expression of "naturalism" in man made architecture and that alone is truly significant, in my opinion.
Much more should be known about those approximately half dozen so-called early "Heathland architects" as much as anything not just for what they did but for when they did it---because, again, that latter part has a great deal to do with a real influence on the future and evolution of architecture, in my opinion.