Hi Ohanlon,
This may remove him from your radar but......
The name is enumerated as CLISPIN, not GLISPIN.
The enumerator writes a capital G at least 3 other times on the same page, as well as many other instances of a capital C - the latter which are the same or similar to the C in CLISPIN.
1900: Roomer: E F CLISPIN, Male, single, age 31, b July 1868 Illinois.This looks like him in 1910 - name is CLIPSON:( His occupation is a bit of a mystery to me)4231 Ellis Avenue, Chicago, Cook County, Illinois (IL)
Head: Alice JAMIESON 40, widow, b IL
Lodger: Edwin F CLIPSON, white, male, age 41, single, b IL. Fa: b England, Mo: b IL. Occ: Promotion (?) at Mines?Lodger: Charles H CADWALLADER 40, divorced, Liveryman, b IL.s
Twenty years later…..
1930: at 902 Grace Avenue, Chicago, Cook County IllinoisHead: Alice JAMIESON 65, widow, b IL, parents b Indiana & Kentucky (same as 1910)
Nephew: Edwin F CLIPSON 60, single, b IL, parents b IL. Magazine Editor.Roomer: Charles CADWALLADER 65, single, b Ohio
His middle name is Fletcher - he's under that name in 1920, when he's still with Aunty Alice JAMIESON & Mr CADWALLADER. He applied for an emergency US passport in 1913 whilst in Japan working as a Theatre Manager intending to travel to Russia. Much can be found on Mr E.F. CLIPSON - much of it looks fascinating - but am restraining myself from posting more, as he's not a GLISPIN

A positive negative is a also good thing......

Cheers
AMBLY