From: chris@dickinson.uk.net   
      
   On Saturday, 1 September 2018 11:09:31 UTC+1, Jenny M Benson  wrote:   
   > On 01-Sep-18 07:02 AM, cecilia wrote:   
   > > I use it as an object lesson for a cousin - that he should not assume   
   > > he has the same person because it is the same name.   
   >    
   > Very early in my research I made the same basic mistake.  It never    
   > occurred to me that the same combination of 3 names might not be unique    
   > and the resources at my disposal at that time were limited.  It was only    
   > when I came to an apparent brother-sister marriage that I realised I had    
   > gone wrong!   
   >    
   > Of course, it turned out that 2 cousins were perpetuating family names    
   > and the "brother-sister marriage" was in fact the marriage of cousins.   
   >    
   > --    
   > Jenny M Benson   
   > http://jennygenes.blogspot.co.uk/   
      
   The 'perpetuating family names' is certainly one reason why this can happen.   
      
   The other danger is to forget that surnames were often highly clustered, so   
   the likelihood of two surnames being linked together more that once is greatly   
   increased. Two instances of 'Lancelot Fletcher Pearson' in Cumbria (not that I   
   know of any) could    
   so easily come from entirely independent families.   
      
   Chris   
      
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