You say you only have information off the 1930 census.
So wonder if this will give you an insight and a little background into how the family travelled. It all adds to the story.
John is John Clarence Bernard Boot arrived Canada on the Minnedosa 30 June 1923. He hadn't lived in Canada before and hoped to emmigrate. Destination Montreal to Miss F Arrowsmith - a friend - 37 Rosemount Avenue. Westmount. Montreal. Nearest relative in country from where he came was Mrs J Boot of 2 Rowland Street. Rugby.
In July 1923 he crossed the border from Canada into the USA, also with him was William Arrowsmith (husband of sister Elsie) Elsie and Annie were named as wives back in Rugby.
John was Naturalized in Detroit. Michigan.
Annie Louisa Emily Boot birthplace Napton. Rugby arrived 14 Sept 1923 Quebec on the Ausonia. Object of going to Canada was to visit relations and she did not intend to live permanently in Canada. She had £10 and was going to her Uncle at 133 Irvine Avenue. West Mount. Montreal. Looks like Mr G Allibone. Her mother Clara Eadon lived in Rugby
John, Annie & daughter born in Michigan 1926 made a border crossing USA to Canada - arriving Walkersville. Ontario 13 July 1929. This scan in particular gives a fair amount of detail, please send me a personal message with your e-mail address if you would like this for your records.
Regard