Wilhelm, Prinz von Baden - Wilhelm, Prinz von Baden is your second great aunt's brother's wife's niece's husband's second great nephew's wife's fourth great uncle

Wilhelm, Prinz von Baden is your 11th cousin twice removed.
You → Elza Dzelvite (Grahpe,Grāpe) (your mother) → Jahn Grahpe (her father) → Baron Arnold Julius von Vietinghoff-Riesch (his father) → Carl Arnold von Vietinghoff (his father) → Reinhold Johann Peter von Vietinghoff (his father) → Augusta Christiane Isabella Elisabet von Vietinghoff (his mother) → Christina Sophie von Rosen (her mother) → Johann Gustav von Rosen, a. Kiekel (her father) → Georg Gustav von Rosen (his father) → Elisabeth von Rosen (his mother) → Baron Paul von Khevenhüller, till Julita (her father) → Regina Catharina von Khevenhuller (his mother) → Paul von Thannhausen (her father) → Johann Christoph von Thannhausen (his brother) → Anna von Puchheim (his daughter) → Elisabeth von Puchheim (her daughter) → Barbara von Wolfstein, Freiin (her daughter) → Albrecth Friedrich von Wolfstein, Graf von Wolfstein (her son) → Sofie Christiane von Wolfstein, Markgräfin zu Brandenburg-Bayreuth (his daughter) → Princess Sophia Magdalen of Brandenburg-Kulmbach (her daughter) → Frederick V of Denmark and Norway, of Oldenburg, King of Denmark and Norway (her son) → Queen Consort Sophia Magdalena of Sweden (his daughter) → King Gustav IV Adolf of Sweden (her son) → Sofia Wilhelmina Marie Louise Charlotte Wilhelmina Catharina Maria Louise Charlotte Anna, Aka Sophie Of Bavaria And Sweden Archduchess Austria av Sverige, Großherzogin zu Baden (his daughter) → Wilhelm, Prinz von Baden (her son)

Wilhelm, Prinz von Baden is my 8th cousin 5 times removed.