So the 1911 & 1921 Censuses give 2 possible birth dates for Thomas - 1871 and 1879... which could both be wrong. Possibly he was born a little earlier?? Found this family on the 1871/1881 Censuses and the father, Thomas was born the same place as Septimus.... Thomas the son was born 1868 AND they are living in Barrow In Furness where Sarah Slee lived as well.....
Name: Thomas Janson Event Type: Census Event Date: 1871 Gender: Male Age: 3 Relationship to Head of Household: Son Birthplace: Barrow, Lancashire Schedule Type: Household Registration District: Ulverston Sub-District: Dalton Parish: Dalton County: Lancashire HouseholdGenderAgeBirthplace Head Thomas Janson M 36 Lancashire Wife Sarah Janson F 33 Kirkby Ireleth, Lancashire Daughter Margeret Janson F 12 Kirkby Ireleth, Lancashire Daughter Isabella Janson F 7 Kirkby Ireleth, Lancashire Daughter Elizabeth Janson F 5 Darlton, Lancashire Son Thomas Janson M 3 Barrow, Lancashire Father James Janson M 64 Burton, Westmorland Lodger Thomas Driver M 41 Bolton, Lancashire Lodger William Pine M 24 Saint Teath, Cornwall
Name: Thomas Janson Age (Original): 48 Gender: Male Birth Year: 1833 Birthplace: Parton, Lancashire, England Relationship to Head of Household: Head Marital Status: Widower Occupation: Blacksmith Address: 89 Albert St Event Place: Barrow In Furness, Lancashire, England Disability: Record Type: Household GS Film number: 1342024 Affiliate Publication Number: RG11 Piece/Folio: 4286 / 19 Page Number: 31 HouseholdGenderAgeBirthplace Head Thomas Janson M 48 Parton, Lancashire, England Daughter Elizabeth Janson F 15 Barrow, Lancashire, England Son Thomas Janson M 13 Barrow, Lancashire, England Son James Janson M 9 Barrow, Lancashire, England
Still there on 1891 Census Index - Thomas Sr. has a new wife too....
Thomas J Anson58Barrow In Furness, Barrow In Furness Elizabeth Anson28Barrow In Furness, Barrow In Furness Thomas Anson23Barrow In Furness, Barrow In Furness Rose Anson6Barrow In Furness, Barrow In Furness Lily Anson4Barrow In Furness, Barrow In Furness Mary Annie Anson2Barrow In Furness, Barrow In Furness Daisy Anson1Barrow In Furness, Barrow In Furness
Still there on 1901 Census Index - on the 1911 Canadian Census, Thomas is also a "BLACKSMITH".....
Thomas Janson33Lancs BarrowBarrow In FurnessBarrow In FurnessBlacksmith Shipyard Mary A Janson12Lancs BarrowBarrowBarrow In FurnessJuvenile Rose Janson16Lancs BarrowBarrowBarrow In FurnessJuvenile Albert E Janson3Lancs BarrowBarrowBarrow In FurnessJuvenile Thomas Janson64Lancs WartonBarrowBarrow In FurnessBlacksmith Daisy Janson11Lancs Barrow BarrowBarrow In FurnessJuvenile
Death of father - year son emigrated to Canada
Name: Thomas I'Anson Event Type: Death Registration Quarter: Apr-May-Jun Registration Year: 1906 Registration District: Barrow In Furness County: Lancashire Event Place: Barrow In Furness, Lancashire, England Age (available after 1866): 73 Birth Year (Estimated): 1833 Volume: 8E Page: 521 Line Number: 18
AND here are the brothers on the 1841 Census Index -
James Janson30Lancaster, Warton Isabella Janson35Lancaster, Warton Thomas Janson9Lancaster, Warton William Janson6Lancaster, Warton Septimus Janson2Lancaster, Warton
Name: Septimus Ianson Birth Date: 1837 Age: 21 Spouse's Name: Margaret Bird Spouse's Birth Date: 1836 Spouse's Age: 22 Event Date: 1858 Event Place: St. Mary'S, Lancaster, Lancashire, England Father's Name: James Ianson Spouse's Father's Name: William Bird Indexing Project (Batch) Number: M00590-5 System Origin: England-VR GS Film number: 1526201 Reference ID: 2:3KQC44K