Harriet Flowers and Henry Hart - Marriage

Distracted as usual while updating part of my journal I landed on this previous post regarding Harriet HART (née Harriet FLOWERS) and Henry HART. At the time I could not find a marriage for Harriet FLOWERS and Henry HART. Today I ran a search on FreeBMD since records are being added all the time and found an entry for a marriage between Henry HART and Harriet FLOWERS. They were married during September 1913 at Sheffield, Yorkshire, England.

This is intriguing. If my records are correct Henry and Harriet would been at least 40 years of age and the two children shown on the 1901 British Census about 17 and 14 years of age.

Heny HART and his son William HART are recorded as being born in Norfolk NK (I presume NK is Not Known, though I could be wrong). I recieved from 'Judith' this comment to the earlier post:

Hart family Norfolk
"Don't know if this ties into your family anywhere but my 4xgreat grandfather was a bricklayer in the North Walsham area of Norfolk as was his father & grandfather. He was Philip Hart bpt 1787 married to Mary Barber. His granddaughter Sarah Jane Hart (my gg grandmother) moved to County Durham in the 1860's."
Judith

I am intrigued by this so I will add the marriage certificate for Harriet FLOWERS and Henry HART to my task list.