For our own edification:
Aikido
http://en.wikipedia.org/wiki/Aikido
Developed by Ueshiba as an expression of universal peace and reconcilliation aikido was synthesized primarily from
Daito-ryu Aiki-jujitsu.
Additional styles incorporated into the system:
Ten-jin shinyo ryu,
Gotoha Yagyu Singan-ryu and
Judo.
Its technical structure is derived from kenjutsu (
jubaji and Arieson were right all along).
Weapons include staff, spear and bayonet.
Daito-ryu Aiki-jujutsu
http://en.wikipedia.org/wiki/Daito-ryu_aiki-jujutsu
Its translated as the "great estern style" and stylisticcally described as the 'harder' father style of aikido, the art also includes sword techniques from a style called
Ono-ha Itto ryu.
Jujitsu
http://en.wikipedia.org/wiki/Jujutsu#Origins