▁Mar qu ess ▁of ▁H ert ford . ▁ ▁Mary ▁was ▁the ▁daughter ▁of ▁Alexander ▁H ood , ▁ 1 st ▁Vis count ▁Br id port , ▁and ▁his ▁wife , ▁the ▁former ▁Lady ▁Mary ▁Pen el ope ▁Hill . ▁She ▁married ▁the ▁future ▁marqu ess , ▁then ▁an ▁MP ▁and ▁the ▁he ir ▁to ▁the ▁marqu ess ate , ▁on ▁ 1 6 ▁April ▁ 1 8 6 8 ▁at ▁W inds or . ▁A ▁photograph ▁of ▁the ▁couple ▁on ▁their ▁wed ding ▁day ▁was ▁owned ▁by ▁Queen ▁Victoria ▁and ▁is ▁in ▁the ▁Royal ▁Collection . ▁ ▁They ▁had ▁eight ▁children : ▁ ▁Lady ▁Margaret ▁Alice ▁Se ym our ▁( 1 8 6 9 – 1 9 0 1 ), ▁who ▁married ▁James ▁Is may ▁and ▁had ▁children ▁George ▁Se ym our , ▁ 7 th ▁Mar qu ess ▁of ▁H ert ford ▁( 1 8 7 1 – 1 9 4 0 ) ▁Lady ▁Em ily ▁Mary ▁Se ym our ▁( 1 8 7 3 – 1 9 4 8 ), ▁who ▁married ▁Re ver end ▁Regin ald ▁Walker ▁and ▁had ▁children ▁Lady ▁Victoria ▁Freder ica ▁Wilhelm ina ▁Georg ina ▁Se ym our ▁( 1 8 7 4 – 1 9 6 0 ), ▁who ▁married ▁Charles ▁Tra ff ord ▁and ▁had ▁children ▁Lady ▁Jane ▁Ed ith ▁Se ym our ▁( 1 8 7 7 – ? ), ▁married ▁Major ▁Hugh ▁Car leton ▁Brig ad ier - General ▁Lord ▁Henry ▁Charles ▁Se ym our ▁( 1 8 7 8 – 1