Is at the knock out in the park

• Castleknock is a village west of Phoenix Park. (Cf. Castleknock at Wikipedia, Castleknock at the FW Gazetteer)

• Castleknock Hill and Windmill Hill (now Mount Hybla) are identified with Finn Mac Cool's (and HCE's) two feet. The Sigla of Finnegans Wake 13n: "In the time of D'Alton, The History of the County of Dublin (Dublin, Hodges & Smith, 1838), p. 641, these were prominent, one crowned with a tower, the other with a castle.

• knock → hill (I cnoc: "hill", AngI knock: "hill")

• Knockmaroon: (I Cnoc na Marbhán: "the hill of the corpses") locality in the northwest corner of Phoenix Park (Source: FW Gazetteer)

• knock: to knock down → Humpty Dumpty

• knock out: to knock someone out, to render them unconscious → in Sheridan Le Fanu's 1861 novel The House by the Churchyard, a character is attacked and left for dead in the Hollow in the Phoenix Park

• knock out: a knock-out in a boxing match