All these are possible siblings of Raymond:
June qtr 1915 Ivy L Reader
December qtr 1917 Minnie Reader
June qtr 1925 Stanley S Reader
And this could be Samuel and family in 1901:
Reference RG13, Piece 2719, Folio 11, Page 13
14 Pleasant Street, West Bromwich
Reader, Samuel Head M 41 Holloware Moulder
Reader, Alice Wife F41
Reader, Joseph Son M 18 Holloware Sorter
Reader, Thomas Son M 16 Assistant Holloware Moulder
Reader, William Son M 14 Railway Parcel Delivery Boy
Reader, Samuel Son M 12
Reader, Charles Son M 9
Reader, Walter Son M 7
Reader, Richard Son M 4
Reader, Emily Daughter F 2
Reader, John Son M 2 months