Castell-Castell was a county in the Holy Roman Empire, ruled by a branch of the Counts of Castell. It was established as a partition of Castell-Remlingen in 1668, and it was partitioned between itself and Castell in 1709. It annexed the County of Castell in 1772, and was mediatised to Bavaria in 1806.^[1]

Counts of Castell-Castell (1668–1806)

Wolfgang Theodoric (1668–1709)
Augustus Francis Frederick (1709–1767) reigned mutually with
Charles Frederick Gottlieb (Count of Castell-Remlingen) (1709–1717) and
Wolfgang George II (1709–1736) and
Christian Frederick Charles (Count of Castell-Rüdenhausen (1736–1773)
Albert Frederick Charles (1773–1806) mutually with
Christian Frederick (later Count of Castell-Rüdenhausen) (1773–1803)

(Mediatized) Counts of Castell-Castell

Friedrich Ludwig (1810-1875)
Carl (1875-1886)
Friedrich Carl (1886-1901)

(Mediatized) Princes of Castell-Castell

Friedrich Carl, Count 1886–1901, 1st Prince 1901-1923 (1864-1923), wed 1895 Countess Gertrud of Stolberg-Wernigerode^[1]
- Carl, 2nd Prince 1923-1945 (1897-1945), wed Princess Anna-Agnes of Solms-Hohensolms-Lich^[1]
  - Albrecht, 3rd Prince 1945-2016^{[citation needed]} (1925-2016), m. Marie Luise, princess of Waldeck and Pyrmont
    - Ferdinand, 4th Prince 2016–present (born 1965), wed Countess Marie-Gabrielle von Degenfeld-Schonburg
      - Carl, Hereditary Count of Castell-Castell (born 2001)
      - Count Johannes (b.2011)^{[citation needed]}

Counts of Castell-Castell (1668–1806)

(Mediatized) Counts of Castell-Castell

(Mediatized) Princes of Castell-Castell

References