I'll go through my matches and see if I can find any further relations through Dyer line. But I am seeing a DNA match which I do not recognise. It states he is my grandparent's cousin or half great-grand uncle. However, the DNA match which could be my dad's 1st cousin, is not a shared match with this person.
If Olivia was born in 1911 and Laurence Roy was born in 1916, having a 5 year gap during this time was uncommon so there could have been a birth during those 5 years, if not possibly a baby out of wedlock with another woman