Josef Leo Bak

Birth record:

https://www.familysearch.org/ark:/61903/3:1:33SQ-GB2H-1ZT?i=263&wc=...

1st Marriage record

"England and Wales Marriage Registration Index, 1837-2005," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:2DXG-9HP : 13 December 2014), Josef Leo Bak, 1908; from "England & Wales Marriages, 1837-2005," database, findmypast (http://www.findmypast.com : 2012); citing 1908, quarter 1, vol. 1A, p. 458, Fulham, London, England, General Register Office, Southport, England.

1911 England and Wales Census

"England and Wales Census, 1911," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:XWGQ-G55 : 8 May 2019), Josef Leo Bak, Stoke Newington, London, England, United Kingdom; from "1911 England and Wales census," database and images, findmypast (http://www.findmypast.com : n.d.); citing PRO RG 14, The National Archives of the UK, Kew, Surrey.

Rotterdam Registration

https://stadsarchief.rotterdam.nl/zoek-en-ontdek/archieven/zoekrest...

2nd Marriage record:

http://www.stadsarchief.rotterdam.nl/archieven?mivast=184&miadt=184...

Biography https://www.archieven.nl/nl/zoeken?miview=inv2&mivast=0&mizig=210&m...