Taylor Swift is my 25th cousin thrice removed.
You → Horváth Anna (your mother) → János Horváth (her father) → Gábor Horváth (his father) → Julianna Hagymásy (his mother) → Áron Hagymásy (her father) → Sámuel Hagymásy (his father) → Lídia Laskay (his mother) → Kriston Krisztina (her mother) → Kriston András (her father) → Erzsébet Szabó (his mother) → Erzsébet Jármy (her mother) → László Jármy (her father) → András II. 2. Jármy (his father) → András I. 1. Jármy (his father) → Zathay Anna (his mother) → Katalin Vay (her mother) → Katalin Kamarás de Zelemér (her mother) → Benedek Jr. Kamarás de Zelemér, JR (her father) → Erzsébeth Somlyói Báthori (his mother) → György Báthori de Somlyó (her father) → Szaniszló Somlyói Báthory de Somlyó (his father) → Anna Medgyesi (Moricz) (his mother) → Móricz, Count of Bakony Hungary (her father) → Erzsébet Darai de Dáró (his mother) → of Kiev Erzsébet (her mother) → Kunigunda Rostislavna Přemyslovna (her sister) → Wenceslaus II, King of Bohemia (her son) → Margaret of Bohemia, Duchess of Wroclaw (his daughter) → Wenceslaus I of Legnica (her son) → Rupert I legnicki of Legnica, książę (his son) → Barbara von Schlesien-Liegnitz, Herzogin zu Sachsen-Wittenberg und Kurfürstin zu Sachsen (his daughter) → Duchess Barbara of Saxe-Wittenberg (her daughter) → Dorothea of Brandenburg (her daughter) → Margaret af Danmark og Norge von Oldenburg (her daughter) → James IV, king of Scots (her son) → Margaret Jane Stewart (his daughter) → Jean Drummond (her daughter) → Anne Chisholm (her daughter) → Robert Napier, 1st Laird of Culcreuch (her son) → Anna Napier (his daughter) → Elizabeth Leckie (her daughter) → John Buchanan, 1st Laird of Blairlusk (her son) → George Buchanan of Blairlusk, later of Deroran (his son) → Thomas Buchanan (his son) → William Alexander Buchanan (his son) → John Buchanan (his son) → Thomas Buchanan (his son) → Margaret Kingsley (his daughter) → Rev. Alanson Kingsley (her son) → Barbara Marie Jane "Jennie" (Kingsley) Thompson (his daughter) → Bernice Swift (her daughter) → Archie Swift, Jr. (her son) → Swift <private> (his son) → Taylor Swift (his daughter)