The free site Welsh Newspapers Online has various titles pre-1910 .
I have found an advert for a property auction to be held at the Marine Hotel,Llandudno on 24th June 1904 in the "Welsh Coast Pioneer"
It names Myrtle Grove,Northern Grove, and three others as being Maelgwyn Terrace,Winllan Avenue-rental( £20 a year!)
I also found a reference in The Llandudno Advertiser 24th April 1903 page 7 about the "New Cemetery"."It has been decided to accept the tender of Messrs J and J Williams of Northern Grove,
Maelgwyn Terrace....
I suppose these house names like surnames are not unique and its a question of disentangling the right Williams'with the right addresses,
In the 1901 census (RG13/5289)the Williams family(Head John Williams-builder) is listed at Winllan Avenue( 179) and no house name but I now
notice that at the top of the page is Vaughan Street,Bodywily?? and under 180 ,at the bottom of the
page Vienna House.Does that make any sense at all?