His mother's favourite son; died unmarried and without issue while serving in the Boer War
Succeeded as head of the House of Oldenburg in 1921; had one illegitimate daughter, Valerie Marie zu Schleswig-Holstein
Married 1891; Prince Aribert of Anhalt; no issue; marriage was dissolved in 1900
Prince Albert never married. According to one report, he was called "the most exalted woman-hater on earth. His favourite subject of conversation has been his dislike of the fair sex." An engagement was announced to a Countess Ortrud zu Ysenberg und Büdingen, but then abandoned.
He fathered an illegitimate daughter, Valerie Marie. Born 3 April 1900 in Liptovský Mikuláš, Hungary, Austria-Hungary, she was placed almost immediately after her birth with Anna Rosenthal and her husband Rubin Schwalb, of Jewish origin. On 15 April 1931, shortly before his death, Albert wrote to her, admitting to her his paternity. After this, on 12 May she changed her surname from Schwalb, the name of her foster family, to "zu Schleswig-Holstein"
None of the other children of Princess Helena and Prince Christian had any children themselves