On 02 Jun 1753 [his brother] Henry Roper 11th Baron Teynham (age 20) and Maria Wilhelmina Head were married. A Marriage of Two Sets of Siblings; her sister Anna Gabriella Head would subsequently marry his brother [his brother] John Roper (age 18). Further, their two younger brothers Francis Roper (age 15) and [his brother] Philip Roper Roper (age 13) also married siblings [his future wife] Mary Lyttelton (age 19) and [his future sister-in-law] Barbara Lyttelton respectively.

On 21 Mar 1760 [his brother] John Roper (age 25) and Anna Gabriella Head were married. A Marriage of Two Sets of Siblings; her sister Maria Wilhelmina Head had previously married his brother [his brother] Henry Roper 11th Baron Teynham (age 26). Further, their two younger brothers Francis Roper (age 22) and [his brother] Philip Roper Roper (age 20) also married siblings [his future wife] Mary Lyttelton (age 26) and [his future sister-in-law] Barbara Lyttelton respectively.

On 27 Jun 1765 Francis Roper (age 27) and Mary Lyttelton (age 31) were married. A Marriage of Two Sets of Siblings; her sister Mary Lyttelton (age 31) would subsequently marry his brother Philip Roper Roper (age 25).

On 21 Mar 1766 [his brother] Philip Roper Roper (age 26) and [his sister-in-law] Barbara Lyttelton were married. A Marriage of Two Sets of Siblings; her sister [his wife] Mary Lyttelton (age 32) was previously married to his brother Francis Roper (age 28). Further, their two older brothers [his brother] John Roper (age 31) and [his brother] Henry Roper 11th Baron Teynham (age 32) also married siblings Anna Gabriella Head and Maria Wilhelmina Head respectively.

On 21 May 1788 [his son] Henry Francis Roper-Curzon 14th Baronet (age 21) and [his daughter-in-law] Bridget Hawkins Baroness Teynham were married. She by marriage Baroness Teynham of Teynham in Kent.