On 05 May 1927 [his father] Alexander Montagu 10th Duke of Manchester 1902-1977 (age 24) and [his mother] (age 25) were married at Kimbolton Castle [Map]. She by marriage Duchess Manchester. They had two sons. He the son of William Montagu 9th Duke Manchester 1877-1947 (age 50) and Helena Zimmerman (age 48).
On 05 Feb 1929 Sidney Montagu 11th Duke of Manchester was born to Alexander Montagu 10th Duke of Manchester 1902-1977 (age 26) and (age 27).
On 09 Feb 1947 [his grandfather] William Montagu 9th Duke Manchester 1877-1947 (age 69) died. His son [his father] Alexander Montagu 10th Duke of Manchester 1902-1977 (age 44) succeeded 10th Duke Manchester, 13th Earl Manchester, 13th Viscount Mandeville, 13th Baron Montagu of Kimbolton.
On 07 Feb 1969 [his father] Alexander Montagu 10th Duke of Manchester 1902-1977 (age 66) and [his step-mother] Elizabeth Fullerton (age 56) were married. He the son of William Montagu 9th Duke Manchester 1877-1947 and Helena Zimmerman (age 90).
On 23 Nov 1977 [his father] Alexander Montagu 10th Duke of Manchester 1902-1977 (age 75) died. His son Sidney Montagu 11th Duke of Manchester (age 48) succeeded 11th Duke Manchester, 14th Earl Manchester, 14th Viscount Mandeville, 14th Baron Montagu of Kimbolton.
On 03 Jun 1985 Sidney Montagu 11th Duke of Manchester (age 56) died. His brother [his brother] Angus Montagu 12th Duke of Manchester 1938-2002 (age 46) succeeded 12th Duke Manchester, 15th Earl Manchester, 15th Viscount Mandeville, 15th Baron Montagu of Kimbolton.
Paternal Family Tree: Montagu
Kings Wessex: Great x 27 Grand Son of King Edmund "Ironside" I of England
Kings Gwynedd: Great x 24 Grand Son of Owain "Great" King Gwynedd 1100-1170
Kings Seisyllwg: Great x 30 Grand Son of Hywel "Dda aka Good" King Seisyllwg King Deheubarth
Kings Powys: Great x 25 Grand Son of Maredudd ap Bleddyn King Powys 1047-1132
Kings England: Great x 15 Grand Son of King Henry VII of England and Ireland
Kings Scotland: Great x 20 Grand Son of Robert "The Bruce" I King Scotland
Kings Franks: Great x 24 Grand Son of Louis VII King Franks
Kings France: Great x 18 Grand Son of Charles "Beloved Mad" VI King France
Great x 4 Grandfather: William Montagu 5th Duke Manchester 1771-1843 13 x Great Grand Son of King Edward III of England
Great x 3 Grandfather: George Montagu 6th Duke Manchester 10 x Great Grand Son of King Henry VII of England and Ireland
Great x 4 Grandmother: Susan Gordon Duchess Manchester -1828 9 x Great Grand Daughter of King Henry VII of England and Ireland
Great x 2 Grandfather: William Drogo Montagu 7th Duke Manchester 1823-1890 11 x Great Grand Son of King Henry VII of England and Ireland
Great x 4 Grandfather: Brigadier-General Robert Bernard Sparrow 17 x Great Grand Son of King John "Lackland" of England
Great x 3 Grandmother: 18 x Great Grand Daughter of King Henry III of England
Great x 4 Grandmother: Olivia Acheson
17 x Great Grand Daughter of King Henry III of England
Great x 1 Grandfather: George Victor Drogo Montagu 8th Duke Manchester 12 x Great Grand Son of King Henry VII of England and Ireland
Great x 3 Grandfather: Karl Franz Viktor Vonalten
Great x 2 Grandmother: Louisa Vonalten Duchess Devonshire and Manchester
GrandFather: William Montagu 9th Duke Manchester 1877-1947 13 x Great Grand Son of King Henry VII of England and Ireland
Great x 2 Grandfather: Antonio Modesto Yznaga del Valle
Great x 1 Grandmother: Consuelo Yznaga Duchess Manchester
Father: Alexander Montagu 10th Duke of Manchester 1902-1977 14 x Great Grand Son of King Henry VII of England and Ireland
GrandMother: Helena Zimmerman
Sidney Montagu 11th Duke of Manchester 1929-1985 15 x Great Grand Son of King Henry VII of England and Ireland