FamilyTree

Ward Cunningham - Grandfather of XP. Joint originator (with Kent) of many of the core ideas.

Kent Beck - The Father of XP. Coach of first XP project at Chrysler (C3); author of 'Extreme Programming Explained'

Ron Jeffries - Uncle of XP. Coach on TheC3Project.

Also influential:

Martin Fowler - author of 'Refactoring - Improving the Design of Existing code' and 'Analysis Patterns'

Erich Gamma - one of the GoF authors of Design Patterns, works at OTI (Ottawa)

The spread of XP to members of the ExtremeTuesdayClub (date in brackets is matriculation to XP). Please correct any errors and omissions, and accept my apologies! - SvenHowarth

 KentBeck (1996), 'turns all the knobs up' on C3 project at Chrysler
 |__RonJeffries? (1996), coach of C3 team. Writes about XP on Wiki in '98
 |   |__Wiki site (created by Ward Cunningham)
 |       |__SteveFreeman (1998), developer at OTI, sees XP on Wiki, argues it over with TimM. Moves to LRS late '98 and starts rolling in the practices. Starts Finatix project July '99, the largest XP project in the country for a while. Now at BigBlueSteelTiger?
 |       |   |__TimMackinnon (1998), moves from OTI to Dashboards end '98. First XP project in UK (?), with Oli & Paul. Now at ConneXtra
 |       |   |   |__IvanMoore (Feb '99), first hears of XP from Tim, also directly from Ward at OTI conference (Ottawa); practices it after brought into LRS by Steve (May '99)
 |       |   |   |__PaulSimmons (Feb '99), XP developer at Dashboards, now at DKB
 |       |   |   |   |__XPdeveloper website; eXtreme Tuesday Club
 |       |   |   |       |__TomAyerst, techie manager interested in XP       
 |       |   |   |__OliBye (Feb '99), XP developer at Dashboards, then contracts for LRS on Finatix, then Dune Partners with ChrisCottee, now @ www.bondclick.com
 |       |   |   |   |__KevinHutchinson, hears of XP through OliBye
 |       |   |   |   |__RichardEmerson, technical lead at Warburg, introduced to XP by OliBye, now @ www.scient.com
 |       |   |   |        |__DavidPeterson (1999), contractor at UBS Warburg introduced to XP by RichardEmerson
 |       |   |   |__PaoloPolce (Jul '00), introduced to XP by PeterMarks?. Now works with TimMackinnon
 |       |   |__SvenHowarth (July '99), introduced by Steve to XP on Finatix project at LRS. Now freelance.
 |       |   |__ChrisCottee (July '99), ditto. Worked with Oli at Dune Partners, then SteveFreeman again at BBST
 |       |__KeithBraithwaite, learned XP hanging aroud on Ward's Wiki for the last 2-3 years. Used many of the practices at Parallax/Keane. Now pushing XP at AMS
 |       |__DafyddRees, read Wards Wiki to learn more about Design Patterns but learnt more about XP (This would have been around in 1998 when RonJefferies? was running at full steam on wiki.)
 |__JosephPelrine (1997), picked up the ideas from Kent, worked as his assistant in 1998-1999, taught a workshop with Ward in 2000. Met many of the ExtremeTuesdayClub at various conferences. Now head of MetaProg?, doing training, consulting, programming, and passing on the word.