Return to Talbot County When the conflict between North and South had been brought to a close in 1865, Tilghman returned to native area of
Talbot County, Maryland, and began his preparation for the legal profession. He read law with Maryland Senator,
Charles H. Gibson, was admitted to the bar in 1875, and a son, Samuel Harrison Tilghman, a graduate in civil engineering of Lehigh University, class of 1907.
Post-Civil War activity Maryland Governor
William Thomas Hamilton, appointed Oswald Tilghman, in 1881, as one of the two commissioners, with the rank of colonel, to represent the state at the Centennial Celebration of Cornwallis's surrender at Yorktown. On this occasion he wore the sword presented to Colonel Tench Tilghman by congress in 1781 for his especial service in bearing to the
Continental Congress in
Philadelphia, Pennsylvania, the official announcement from General
George Washington of the surrender of the British garrison at
Yorktown. Colonel Tilghman owned a valuable collection of Revolutionary relics and papers and was affiliated with many patriotic and fraternal societies such as: • Member of the
Maryland Historical Society • Vice-president of the
Society of the Cincinnati of Maryland (It is the oldest
hereditary society in North America) • Represented the Maryland State Society in the General
Society of the Cincinnati • Member of the Maryland Society of Colonial Wars • Commander of Charles S. Winder Camp,
United Confederate Veterans • Brigadier General of the 1st Brigade, 2nd Maryland Division of the United Confederate Veterans • Member of the
Freemasonry • Member of the
Odd Fellows • President of the Board of Development of the
Eastern Shore of Maryland • Auditor of the Circuit Court of Talbot County for over twenty years
Political activity Elected on the Democratic ballot, Senator Oswald Tilghman represented Talbot County in the Maryland Senate, 1894–96. • Member of the
Maryland Democratic Party • Chairman, Committee on Public Buildings in
Annapolis, Maryland • Member of Committee on Judicial Proceedings • Member of Committee on Pensions • Member of Committee on
Chesapeake Bay and Tributaries • Member of Amendments to the
Maryland Constitution of 1867 • President of the Board of Development of the
Eastern Shore of Maryland • Auditor of the Circuit Court of Talbot County, 1886–1906 • Commissioner to represent Maryland at the
Pan-American Exposition in
Buffalo, New York, in 1901 • Commissioner to represent Maryland at the exposition at
Charleston, South Carolina, in 1902 • The State Bureau of Immigration in 1896 was established largely through his efforts From 1904 to 1908 he was appointed, Maryland's Secretary of State by Governor
Edwin Warfield. who was a long personal friend. ==Publishing activity==