Woodlawn Cemetery is on Niagara street in Welland at the corner of Niagara and Woodlawn Road near the Seaway Mall. As you come into the cemetery from Niagara Street, Section A is at the front of the cemetery on the far left. The Lachance stone is in Row 17, stone 2.
This is the information from the cemetery transcription at the Welland Library:
Walter Wm. Lachance
April 12 1869
Sept 23 1951
born at Brockville Ont.
Mr. Lachance is the architect who designed the old fire hall on Division Street in Welland.http://www.historicplaces.ca/en/rep-reg/place-lieu.aspx?id=1...
This is probably Walter and family in the 1901 census for the city of Hamilton, Ontario:http://automatedgenealogy.com/census/View.jsp?id=52840&h...
(His first name is incorrectly transcribed as “Walker”. Daughter Marcellette was born in USA 26 Sept 1894 and son Alva was born in Ontario 4 Aug 1899.)