Baptist
John the Baptist

C.St.J.
...of St. John of Jerusalem

dear
Dear John

finish with
I have finished with John

friend
...friend of John's / a friend of... etc.

Gospel
the Gospel according to St. John

JB
John Bull

John
John Bull

John-a-dreams
indivíduo que anda sempre na Lua

Johnian
...João (St. John's) em Cambridge

Lateran
the Lateran, St. John Lateran

nose
John's estimate was right on the nose

Prester John
Preste João

Ruskinian
...sociais de John Ruskin

saint
Saint John

scrutiny
John felt nervous under her scrutiny

style
my style is plain John Brown

this
it's always John this and John that

younger
John Smith the younger