https://www.strong-family.org/galleries/nz_strongs/strong_06.html
Robert & Jane STRONG’s headstone at Drury Presbyterian Cemetery reads:
“In Loving memory of Robert, Dearly beloved husband of Jane STRONG, died 22nd August 1910, age 80 years. Also, Jane STRONG, wife of the above, died 21st August 1921, age 81 years. They shall be mine saith the Lord of Hosts, in that day when I make up my jewels.”  Photo: 2016.
Drury Presbyterian Cemetery, 191 Great South Road, Drury, 2113, Auckland NZ.
See here for a 14 years earlier view from the same angle, of this headstone before cleaning.
When I visited before, it was a rush visit and I had no cleaning equipment
Thank you whoever did the subsequent cleaning which extended to the neighbouring headstones!

Image of grave of Robert & Jane STRONG.