Sheila, I have Yeos in my Family, My great Grandmother was an Emma Yeo (1858-1936), Who married a Richard Philips (1855 - 1904). They were from the Lostwithiel/St Winnow Area of Cornwall (I believe you are also from Devon, so may know roughly of the area). Without boring you, one of their Daughters was Murial Anne Philips, who married John Charles Treleaven, they in turn had one child, my Father Philip Treleaven. We have traced back as far as William Yeo (1768?-1813) and Honor Broad(1767-1808), however, I believe some of our information has been added to Jean Ashfield's Web Site - http://homepage.ntlworld.com/jean.ashfield/genealogy/pages/yeo.htmhttp://homepage.ntlworld.com/jean.ashfield/genealogy/pages/yeo.htm, as references here show down to the Philips's. Jean has traced it (or sourced it) back to John Yeo and Martha Humbly married 1667.