Yale Graduate 1884, admitted to the Bar in 1886 per Mary Frost Jessup’s History of the Jessup Family in Montrose, Pennsylvania:

1860FCI WmJessup Jr & Sr fam; Pennsylvania > Susquehanna > Montrose; image 24 of 32 @ancesttyr.com; Source Citation: Year: 1860; Census Place: Montrose, Susquehanna, Pennsylvania; Roll: M653_1186; Page: 527; Image: 57; Family History Library Film: 805186
William Jessup; home Montrose, Susquehanna, PA; age 63; b abt 1796; New York; Male; Post Office: Montrose; Roll: M653_1186; Page: 527; Year: 1860; HOH: William Jessup
HOusehold:
Amanda Jessup, age 61, b abt 1798 in New York
Saml Jessup, age 26, b abt 1833 in Pennsylvania
Faney Jessup, age 24, b abt 1835 in Pennsylvania
George Jessup, age 22; b abt 1837
Anna Jessup, age 19; b abt 1840 in Pennsylvania
Hunting Jessup, age17, b abt 1842 in Pennsylvania
Next Household:
W H Jessup, age 30, b abt 1829 in Pennsylvania
Sarah Jessup, age 26, b abt 1833 in New Jersey
Lillie Jessup, age 5, b abt 1854 in Pennsylvania
William Jessup, age 2, b abt 1857 in Pennsylvania
Mary C Jessup, (b abt 1860) age 3.12,in Pennsylvania
and 2 servants

1870FCI Wm H Jessup & Family; United States Federal Census > Pennsylvania > Susquehanna > Montrose; image 37 of 37 @ancestry.com; Source Citation: Year: 1870; Census Place: Montrose, Susquehanna, Pennsylvania; Roll: M593_1454; Page: 170A; Image: 170; Family History Library Film: 552953
listed:
Father William Jessup, lawyer, age 40
wife Sarah, 36
Lillian, 15
William, 11
Mary, 9
George, 8
Sarah, 6
Annie, 3
and 7 other unrelated people

1880FCI William Hunting Jessup and family; Pennsylvania > Susquehanna > Montrose > District 132; image 31 of 35 @ancestry.com; Census Place: Montrose, Susquehanna, Pennsylvania; Roll: T9_1196; Family History Film: 1255196; Page: 312C; Enumeration District: 132; Image: 0617.
Household:
 William H. JESSUP   Self   M   Male  50   PA   Attorney At Law   NY/NY 
 Sarah JESSUP   Wife   M   Female   46   NJ   Keeping House   NJ/NJ 
 Lillian J. JESSUP   Dau   S   Female   25   PA   At Home   PA/NJ 
 William H. JESSUP   Son   S   Male   20   PA   At College   PA/NJ 
 Mary C. JESSUP   Dau   S   Female   18   PA   At Home   PA/NJ 
 George JESSUP   Son   S   Male   17   PA   At School   PA/NJ 
 Louise JESSUP   Dau   S   Female   16   PA   At School   PA/NJ 
 Annie JESSUP   Dau   S   Female   13   PA   At School   PA/NJ 
 Fanny M. JONEKS   SisterLaw   M   Female   32   NJ   Sojourner   NJ/NJ 
 Edwin JONEKS   Nephew   S   Male   12   PA   At School   ---   NJ 
 Sidney JONEKS   Nephew   S   Male   8   PA   At School   ---   NJ 
 Jennie LEWIS   servant   S   Female   W   31   IRE   House Work   IRE   IRE 
next door:
Amanda Jessup 82
Fanny Jessup 45
Mary Ann Kane 18 servant

News1883 WHJessupScrollKeysYale
The Times (Philadelphia, Pennsylvania)
25 May 1883, Fri
Page 2
YALE SOCIETY ELECTIONS
CLassmen Elected to the Skull and Bones, and Scroll and Keys
Special Dispatch to THE TIMES
New Haven May 24
The Yale Senior Society elections took place tonight. The Bones list was a great surprise and the general opinion seems to be that the Keys has secured the more popular men.
The following are those elected to Scroll and Keys:
EC Gale, Minneapolis MInn
AV Armour, Chicago
WF Taylor, Brooklyn
NP Bigelow, Chicago
HC McDowell, Wood Lake KY
JTA Doolittle, Uttica
JW Oakford, Scranton
AL Farwell, Chicago
GH Makuen, Goshen
EF Lawrance, Chicago
EI Sanford, New Haven
JR Halsey, Brooklyn
E McClellan, Cambridge
HC Hopkins, Catskill
The 15th man was not chosen on the grounds, but it is understood to be WH Jessup, Montrose Pa
The Skull and Bones list is as follows….

1900FCI United States Federal Census Pennsylvania > Lackawanna > Scranton Ward 9 > District 75 > 8; image 8 of 35 @ancestry.com; Source Citation: Year: 1900; Census Place: Scranton Ward 9, Lackawanna, Pennsylvania; Roll: 1420; Page: 4B; Enumeration District: 75; FHL microfilm: 1241420.
William H Jessup 41
Lucy S Jessup 32
William H Jessup 8
James M Jessup 6
Catharine K Jessup 4
Anna Fritz 20 servant
Mary E Davis 22 servant

1910FCI United States Federal Census; Pennsylvania > Lackawanna > Scranton Ward 9 > District 0087 > 7; image 7 of 50 @ancestry.com; Source Citation: Year: 1910; Census Place: Scranton Ward 9, Lackawanna, Pennsylvania; Roll: T624_1359; Page: 4A; Enumeration District: 0087; Image: 673; FHL microfilm: 1375372.
William H Jessup 52
Lucy E Jessup 41
William H Jessup Jr. 16 [18]
James M Jessup 16
Christina K Jessup 15
Elizebeth Mcandrew 35

1920FCI United States Federal Census Pennsylvania > Lackawanna > Scranton Ward 10 > District 146 > 10; image 10 of 19 @ancestry.com; Source Citation: Year: 1920; Census Place: Scranton Ward 10, Lackawanna, Pennsylvania; Roll: T625_1580; Page: 5B; Enumeration District: 146; Image: 176.
William H Jessup 62
Lucy S Jessup 52
Christine Jessup 25
Agnes E Manley 17

IMM New York Passenger Lists, 1820-1957; 1921 > June > 10 > Aquitania > 26; Image 26 of 193 @ancestry.com; Source Citation: Year: 1921; ; Microfilm Serial: T715; Microfilm Roll: T715_2980; Line: 10; ; Page Number: 26.
Name: Lucy Jessup; Gender: Female
Arrival Date: 10 Jun 1921
Age: 53; Birth Year: 1868; Birth Location: Pennsylvania; Birth Location Other: Philadelphia
Port of Departure: Southampton
Port of Arrival: New York, New York
Ship Name: Aquitania

1930FCI William and Lucy Jessup; Image source: Year: 1930; Census Place: Scranton, Lackawanna, Pennsylvania; Roll: 2053; Page: 22A; Enumeration District: 41; Image: 44.0.; “owned house” Clay Ave; Scranton > District 41; image 43 of 60 @ancestry.com
Willam Jessup; Lawyer; b abt 1856 in Pennsylvania; Head
Lucy Jessup b abt 1868; Wife