The photograph is dated 1918, with the following message written on the back:
“With dearest love and kisses to our darling Daddie from your loving little daughter & Sonnie (?) Dora & Glyn”
A further line says "taken on baby's birthday March 4 1918, one year and five months old"
"During the last fourteen months we had been hopeful that the search would result inhim being reunited to his family" said Bristol Airport's Jacqui Mills.
"We have not been successful in this search and have drawn a blank".
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A 20-year old man was arrested at an address in Cardiff earlier this morning.
In the last year, almost 12,500 food businesses in Wales have been subject to food hygiene enforcement actions.
Western parts will see plenty of sunshine today, while eastern parts will have overcast skies with some drizzle.