Looking for Henderson of Lyttleton Christchurch New Zealand

I am looking for the Family of William Henderson , born and raised at number 14 Cornwell / Cornwall Street Lyttleton Christchurch New Zealand . Born 22-3-1891 , he married Emily Frances Johnsen , together they lived at number 41 Cornwell/ Cornwall Street Lyttleton Christchurch . William died there 20-8-1974 . They had one son Cyril who died in a motor cycle accident shortly before his 21st Birthday .

Any info , much appreciated .