The couple had officially registered their partnership in 2008, after 16 years.
The couple could have registered at the nursing home's gift shop, but has decided against gifts.
The young couple could not legally register their marriage, however.
In a city of 360,000 people, 271 couples have registered.
Alternatively, the couple may register at department store and have a list of gifts there.
The couple often registers for gifts at a store well in advance of their wedding.
His name was added only when the couple registered their younger son's birth last year.
About 1,300 couples have registered, with fewer than 200 city employees.
However, even if a couple does not register, the property laws will apply to them after they have lived together, usually for three years.
It's easy to find out where a couple has registered by asking them or their family.