London Wiki

A station on the Piccadilly Line in Travelcard Zone 2.

It opened in 1906 as Gillespie Road (the street on which the station is) in 1932 it was renamed Arsenal (Highbury Hill), subsequently becoming just Arsenal. The name change was at the request of the local club - at platform level the wall tiling retains the original name.

The Wikipedia page is [1] and the TfL page [2]

The Arsenal club website Arsenal Station is [3]