Sometimes that makes it very easy, but misspellings or too common names often makes it annoyingly hard. E.g one of my great grandfather's is an August Magnusson born on the September 9th 1842 in South West Sweden, who then moved to Norway. Seems simple. Only there were two August Magnussons born on that same day within walking distance of each other, who both moved to Norway around the same time. Many more during the same month. I eventually managed to disentangle their records, but many people have the wrong one or a light mix in their trees....

That's to say, be cautious about relying only on the names without ruling out other persons who shares it.