YORKSHIRE

MAP BASED ON DATA FROM THE 1881 CENSUS 

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Aggregation by District (Actual Numbers)

Banwell Index

The Banwell Index is named after its creator, the late Eric Banwell, who was a member of the Guild of One-Name Studies. The index shows surname concentrations at frequencies higher than the surname's frequency in the overall population. High Banwell indices should be considered when seeking to identify a surname's geographic origins. Some points about the Banwell Index:

  • High Banwell indices take generations to build. 
  • A high Banwell core might develop over just a few generations with a low frequency name but take more generations with a high frequency one. 
  • The core can relocate, decay or intensify over time, depending on historic events, male birth rates and other variables. 
  • Because the index is relative to the surname's total population, more numerous surnames will have fewer locations reaching a higher index and be more evenly spread out. 

From the table opposite it can be seen that the highest Banwell Index is for Leyburn which indicates a possible geographic origin for those of the name Tomlin.  

District
Name
District
Population
Actual
Number
per
100,000
Banwell
Barnsley 78,556 15 19 2.12
Bradford 310,758 15 5 0.54
Bramley 54,358 4 7 0.82
Ecclesall Bierlow 114,474 5 4 0.49
Guisborough 43,129 1 2 0.26
Halifax 170,293 1 1 0.07
Keighley 61,005 1 2 0.18
Leeds 190,931 10 5 0.58
Leyburn 8,276 15 181 20.15
Pateley Bridge 8,948 1 11 1.24
Pontefract 47,680 6 13 1.4
Richmond Y 13,472 5 37 4.13
Ripon 16,539 7 42 4.7
Rotherham 75,527 3 4 0.44
Sculcoates 99,243 2 2 0.22
Settle 13,801 1 7 0.81
Sheffield 183,076 18 10 1.09
Wakefield 89,112 1 1 0.12