Hello Marleen. I am afraid that I have not seen the name Alson used with the JONES surname. Almost all of my work has been done on dates prior to the 1700s, so it could be more commonly used since this time period. I only have one Alston Jones in Chatham Co., NC, Will Bk, C., p. 104, dated 1855? This name does not appear in Burke, 1840 edition, but there is the spelling Alton, Alston, Alstone, but do not appear Welsh. There are several recent texts on Welsh surnames, i.e., The Surnames of Wales, by John and Shelia Rowlands, and Welsh Family History, by the same. They deal with surnames mostly after the 1800's, but do not list Alson in the index. Do you have a specific reference and date? Jerry.