Martha Sedgwick  [William Sedgwick / Elizabeth Margaret Harding]
b. 1867, Brunswick, Victoria1 (#971)
m. 1890, Victoria, Benjamin James Johnson1 (#5982)

Benjamin James Johnson  [James Johnson / Mary Ann Davies]
b. 1872, Brunswick, Victoria1 (#21744)

Benjamin's father James Johnson was born in Yorkshire.
He and Mary Ann Davies and were married in 18721 (#1057)

Children:

Ethel May Johnson
  b. 1892, Footscray, Victoria1 (#4252)
  m. 1914, Victoria, Clifford Rownds1 (#5799)
William Johnson
  b. 1894, Footscray, Victoria1 (#20670)
  m. 1916, Victoria, Florence Williams1 (#753)
Lawrence George Johnson
  b. 1896, Footscray, Victoria1 (#19928)
  d. 1902, Victoria, Footscray1 (#13805)
James Johnson
  b 1899, Footscray, Victoria1 (#10583)
  m. 1925, Victoria, Doreen Burrell1 (#562)
Letitia Johnson
  b. 1901, Footscray, Victoria1 (#19927)
  m. 1925, Victoria, Francis D Lane1 (#9537)
Benjamin Johnson
  b. 1904, Footscray, Victoria1 (#18070)
  d. 1907, Victoria1 (#1349)
Frederick Flood Johnson
  b. 1906, Footscray, Victoria1 (#26755)
  d. 1957, St Albans, Victoria1 (#4104)
  never married

Sources:

1. Victorian Government Registration Records

Have more data? genealogy@sedgwick.org