The marriage of William Henry Andrew Clark & Frances Amelia Pickard Cambridge was recorded in Warham Registration District, Dorset in 1850. 
UK Census 1851 at 17 Pall Mall, St. James Square, London William H. Clark single, lodger, age 37, born Northumberland occupation Private Gentleman
UK Census 1861 at 6 Leinster Gardens, Paddington William A. clerk age 48, born Northumberland Frances A. wife, age 26, born Bloxworth Caroline F. P. Cambridge sister in law, age 39, born bloxworth Infant Daughter age 4 months, born Middlesex, London
UK Census 1871 at 6 Leinster Gardens, Paddington with wife
UK Census 1881 at 6 Leinster Yard, Paddington William H. cark age 68, born Northamptonshire occupation Private Gentleman Amelia F. wife, age 42 born Bloxworth, Dorset
Census 1911 for wife shows that 1 child was born and died before 1911
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