Sidney was the son of Jethro Vansant Albertson (1837-1911) and Mary Elizabeth “Lizzie” Risley (1836-1915). He married Jennie Cedelin Leeds on 22 Dec 1900 in Atlantic City, Atlantic, New Jersey, USA. They had two daughters: Marion and Ruth.

Sources:

State Census, 1905 (1 Jun) Ocean City, Cape May, New Jersey (Sheet Number: 1A):

Harry C Clayton 32, Oct 1872, SB engineer
Cora M Clayton, 34, Aug 1870
Arthur J Clayton, 8, Jun 1896
Dahlgren S Clayton, 6, Nov 1898
Jethro V Albertson, 66, Jun 1838, yachtman
Mary E [Risley] Albertson, 67, Jan 1838
Sidney D Albertson, 26, Sep 1878, steamboat captain
Jennie C Albertson, 23, Oct 1881
Marion S Albertson, 2, Dec 1902
Adalaide Steelman, 17
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1910 Ocean City Ward 1, Cape May, NJ (Sheet Number: 2A):

Sidney Albertson, Head, 31, M, NJ, Captain Horn 2
Jennie, Wife, 28, M, NJ
Marion, Daughter, 7, NJ
Ruth, Daughter, 2, NJ
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World War I Draft Registration Cards, 1917-1918:

Name: Sidney Demock or Sidney Dimock Albertson
Event Type: Draft Registration
Event Date: 1917-1918
Event Place: Philadelphia, Pennsylvania
Event Place (Original): Philadelphia City No 48
Gender: Male
Birth Date: 19 Sep 1878
Birthplace: United States
Citizenship Place: United States
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1920 Philadelphia Ward 46, Philadelphia, PA (Sheet 7A, 740 Cecil Street, Household #144):

Jessie R Leeds, Head, 62, Married, NJ, Shipliner, shipyard
Anna, Wife, 61, Married, NJ
Sidney D Albertson, Son-in-Law, 39, Married, NJ, Captain, shipyard
Jeanie C Albertson, Wife, 38, Married, NJ
Ruth K Albertson, Daughter, 11, NJ
Marian S Albertson, Daughter, 16, Single, NJ, typist, shipyard
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1930 Palmyra, Burlington, New Jersey (Sheet 10B, 934 Columbia, Household #263):

Sydney D Albertson, Head, 51, NJ, superintendent, bridge company
Jennie C Albertson, Wife, 48, NJ
Ruth R Albertson, Daughter, 22, NJ
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New York, New York Passenger and Crew Lists, 1909, 1925-1957:

Name: Sidney Albertson
Event Type: Immigration
Event Date: 1937
Event Place: New York, New York,
Gender: Male
Age: 59
Birth Year: 1878
Birthplace: Atlantic City NJ
Ship Name: Rotterdam

Thank you to Deborah Polk (#49739099) for contributing to this memorial.