Surnames beginning with GIA

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GIAB GIAC GIAD GIAE GIAF GIAG GIAH GIAI GIAK GIAL GIAM GIAN GIAQ GIAR GIAS GIAT GIAU GIAV GIAZ

Surnames shown in bold text represent around 90% of the population of Great Britain. All other names are very uncommon in the UK and we are unlikely to have any useful data on them.