The Yorkshire Princess Rose was named for Princess Mary, the daughter of King George V and Queen Mary of England.
Don't mean this in a disrespectful fashion but that was painful. The url provided is not valid. I went to the site and searched numerous different ways and the correct one is not there. Then I did a general google search and found what it is and what it looks like. For those interested, I've included the correct information below...
From the Harewood Organization Site:
We are introducing the new rose called "Yorkshire Princess", dedicated to HRH the Princess Mary, Princess Royal, who lived here at Harewood for more than 30 years, to coincide with our Royal Harewood exhibition in this Diamond Jubilee year.
The details: Rosa "Yorkshire Princess" parentage Nice 'n' Easy x Regensberg; breeder Colin Dickson, Dickson Nurseries, Co Down; patio/groundcover; hybridised in 2005; blooms in clusters, white with hint of Orient pink; slight sweet scent; height 66cm, spread 65cm; flowers continuously throughout the summer.
Yorkshire Princess (Dicmouse)