birthdate is given as May 26 in birthday book, no year.
1891 census 55 Elfort Rd Islington RG12/177 page 38
Alfred BORTHWICK age 32 Marine Insurance broker.
Alice M mother widow age 60 born Holborn,
Alice E sister age 34 Photographic retoucher b St pancras
George S brother age 31 Civil servant Exchequer & Audit b St Pancras
Helen A sister 23 photographic retoucher b St Pancras11

1901 Census 68 Inderwick Rd Hornsey London
Alfred J BORTHWICK M 42 Marine Insurance clerk b St Pancras London
Mary E BORTHWICK wife 28 born London Holt
Arthur J BORTHWICK son 8 months b London St Giles5