The Union League of Philadelphia | 9,964 followers on LinkedIn. Number One City Club in the Country. Motto: Love of Country Leads. Founded in 1862. | Founded in 1862 as a patriotic society to support the Union and the policies of President Abraham Lincoln, The Union League of Philadelphia laid the philosophical foundation of other Union Leagues across a nation torn by civil war. The League has hosted U.S. presidents, heads of state, industrialists, entertainers and dignitaries from around the globe and has proudly supported the American military in each conflict since the Civil War. The Union League continues to be driven by its founding motto, Amor Patriae Ducit or Love of Country Leads.