"Netherlands, Groningen Province, Civil Registration, 1811-1940," images, FamilySearch (https://familysearch.org/pal:/MM9.3.1/TH-1-16055-40418-65?cc=2026219 : 22 May 2014), Slochteren ) Geboorten 1883-1887 ) image 65 of 436; Nederlands Rijksarchiefdienst, Groningen (Netherlands National Archives, Groningen).
30-09-1883 Geboren Willem zoon van Menne Groothuis en Anniggien Grasdijk te Scharmen (Slochteren)
https://familysearch.org/ark:/61903/3:1:939J-R79X-YH
"Netherlands, Groningen Province, Civil Registration, 1811-1940," images, FamilySearch (https://familysearch.org/pal:/MM9.3.1/TH-1-16055-62122-70?cc=2026219 : 22 May 2014), Slochteren ) Overlijden 1888-1892 ) image 81 of 331; Nederlands Rijksarchiefdienst, Groningen (Netherlands National Archives, Groningen).
07-04-1889 Overleden Willem zoon van Menne Groothoff en Anniggien Grasdijk te Scharmer (Slochteren) 5 jaar oud
https://familysearch.org/ark:/61903/3:1:939J-R7SC-MG
"Netherlands Births and Baptisms, 1564-1910," database, FamilySearch (https://familysearch.org/pal:/MM9.1.1/X131-F8C : 12 December 2014), Willem Groothoff, 30 Sep 1883; citing Slochteren, Groningen, Netherlands; FHL microfilm 446,663.
https://familysearch.org/ark:/61903/1:1:X131-F8C
"Netherlands Deaths and Burials, 1668-1945," database, FamilySearch (https://familysearch.org/pal:/MM9.1.1/FNZL-FM5 : 12 December 2014), Willem Groothoff, 07 Apr 1889; citing Scharmer, Groningen, Netherlands, reference ; FHL microfilm 446,668.
https://familysearch.org/ark:/61903/1:1:FNZL-FM5
"Netherlands, Groningen Province, Civil Registration, 1811-1940," images, FamilySearch (https://familysearch.org/pal:/MM9.3.1/TH-1-19270-75956-34?cc=2026219 : 22 May 2014), Slochteren ) Tienjarige tafels 1883-1912 ) image 18 of 1385; Nederlands Rijksarchiefdienst, Groningen (Netherlands National Archives, Groningen).
01-10-1883 aangiftedatum, Tienjarige tafels der geborenen gemeente Slochteren 1883-1912, vermeld geboorte Willem Groothoff. Is geboren op 30-08-1883 zoon van Menne Groothoff en Anniggien Grasdijk
https://familysearch.org/ark:/61903/3:1:939L-DZS5-8T
https://familysearch.org/ark:/61903/4:1:LTSX-H1F