Per SSDI:

Isidore Hurtig
United States Social Security Death Index
Age 78
Given Name Isidore
Surname Hurtig
Birth Date 17 May 1884
State New York
Event Date Nov 1962

============================

Issy Hurtig
mentioned in the record of Issy Hurtig and Lizzie Singer
Name Issy Hurtig
Event Type Marriage
Event Date 12 Mar 1911
Event Place Manhattan, New York, New York, United States
Gender Male
Age 25
Marital Status Single
Race White
Birth Year (Estimated) 1886
Birthplace Austria
Father's Name Bnrish Hurtig
Mother's Name Chaye Gnisportr
Spouse's Name Lizzie Singer
Spouse's Gender Female
Spouse's Age 21
Spouse's Marital Status Single
Spouse's Race White
Spouse's Birth Year (Estimated) 1890
Spouse's Birthplace New York
Spouse's Father's Name Snahar Singer
Spouse's Mother's Name Raichal Moseovrtz
Citing this Record

"New York, New York City Marriage Records, 1829-1940," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:243Z-V51 : accessed 23 May 2016), Issy Hurtig and Lizzie Singer, 12 Mar 1911; citing Marriage, Manhattan, New York, New York, United States, New York City Municipal Archives, New York; FHL microfilm 1,613,077.


New York, New York City Marriage Records, 1829-1940
Reference ID cn 8044
GS Film Number 1613077
====================================
1920 US Census:

Name: Isadore Hurtig
Age: 36
Birth Year: abt 1884
Birthplace: Romania
Home in 1920: Manhattan Assembly District 8, New York, New York
Street: East Hamiter Streete
House Number: 148
Race: White
Gender: Male
Immigration Year: 1900
Relation to Head of House: Head
Marital Status: Married
Spouse's Name: Lizzie Hurtig
Father's Birthplace: Romania
Mother's Birthplace: Romania
Native Tongue: Romanian
Able to Speak English: Yes
Occupation: Butcher
Industry: Store
Employment Field: Own Account
Naturalization Status: Naturalized
Neighbors: View others on page
Household Members:
Name Age
Isadore Hurtig 36
Lizzie Hurtig 29
Jenny Hurtig 8
Paul Hurtig 6
Jake Hurtig 4
=======================================

1925 NYS Census:
Name: Isadore Hurtig
Birth Date: abt 1883
Birth Place: Romania
Age: 42
Gender: Male
Residence Place: New York, New York
Relationship: Head
Color or Race: White
Number of Years in US: 25
Assembly District: 08
House Number: 146
Line Number: 21
Page Number: 7
Household Members:
Name Age
Isadore Hurtig 42
Lizzie Hurtig 31
Jennie Hurtig 14
Paul Hurtig 11
Jack Hurtig 09
======================================

1930 US Census:
Name: Isidore Hurtig
Birth Year: abt 1885
Gender: Male
Race: White
Birthplace: Romania
Marital Status: Widowed
Relation to Head of House: Head
Home in 1930: Manhattan, New York, New York
Map of Home: View Map
Street address: Eldridge Street
Ward of City: 2nd Assembly District
Block: A
House Number in Cities or Towns: 206
Dwelling Number: 9
Family Number: 86
Home Owned or Rented: Rented
Home Value: 32
Radio Set: No
Lives on Farm: No
Attended School: No
Able to Read and Write: Yes
Father's Birthplace: Romania
Mother's Birthplace: Romania
Language Spoken: yiddish
Immigration Year: 1901
Naturalization: Naturalized
Able to Speak English: Yes
Occupation: Owner
Industry: Provision
Class of Worker: Working on own account
Employment: Yes

Household Members:
Name Age
Isidore Hurtig 45
Jennie Hurtig 18
Rial Hurtig 16 [Paul]
==============================================

In the 1940 US Census, Isidore is living with his son Jack, and Jack's wife Sara:

Name: Isadore Hurtig
Age: 55
Estimated birth year: abt 1885
Gender: Male
Race: White
Birthplace: Romania
Marital Status: Widowed
Relation to Head of House: Father
Home in 1940: New York, Bronx, New York
Map of Home in 1940: View Map
Street: Marcy Place
Inferred Residence in 1935: Brooklyn, New York
Residence in 1935: Brooklyn, New York
Citizenship: Naturalized
Sheet Number: 5B
Occupation: Butcher
Attended School or College: No
Highest Grade Completed: None
Duration of Unemployment: 26
Class of Worker: Wage or salary worker in private work
Income Other Sources: Yes
Neighbors: View others on page
Household Members:
Name Age
Jack Hurtig 24
Sara Hurtig 21
Isadore Hurtig 55

======================================
Grandfather to Joel and Betsy Hurtig.