John Dexter McIlhenny

Helme & McIlhenny patent on gas meter manufacture
see also: https://pmalibrary.libraryhost.com/agents/people/1072

Lived in Gwynedd township, well outside the City, next to his brother on adjoining farms (see map) 1916.. It is seen on such a Map along Swedesford Road along with another McIlheney property. John's farm was called Ury Farm and consisted of roughly 100 acres spanning Swedesford.

https://www.philamuseum.org/pma_archives/ead.php?c=HPM&p=hn

Built "Park Gate" in 1910:

"Built in 1910 by John D. McIlhenny, Henry’s father, the home is called Park Gate for the twin stone gates marking this section of the city’s entrance to Wissahickon Valley Park. (His son, Henry Plumer) McIlhenny sold the house to Fredric Mann after moving to Rittenhouse Square in 1950. The School District of Philadelphia bought it from Mann in 1954, and two years later built the Lingelbach Elementary School on the grounds next to the house.

"Nearly sixty years later, the School District has no need for Park Gate. Two years ago, Patrick Moran filed an application to place it on the Philadelphia Register of Historic Places; the Historical Commission requested revisions. Currently, the house is vacant and in significant disrepair." <~ from http://hiddencityphila.org/2013/04/the-other-mcilhenny-mansion/

No doubt, it will be torn down soon (ed. note 2014)

Probably the owner of the farm in Gwynedd: https://www.geni.com/photo/view/6000000027132564277?album_type=photos_of_me&photo_id=6000000202224712839