bdw501 on Family Tree Circles

Hi, I've been doing the DORSEY family for a number of years.I have run into a problem. My earliest DORSEY family goes back to a Franklin Dorsey from Hamshire Co,WV 1850s. I had someone from the Family do a DNA.When it came back it matched 37/37 to a Dawson in Texas? Where do I start?

Looking for the family of William Watson from Ireland William married Anna Barker in St Peters Church of Ireland in Drogheda Louth in June 1841.Came to USA and lived in NYC with son John,William Richard,Samuel,John F,Charles,George W,Ruth,Lucy.John married Margaret Holden 1870.501 W 153st NYC.Sexton of St Johns Chapel NYC.
Was William Watson from England?