Cognomen Laelianus (Леліан 
, Laelianus, Леліян ) , throughout the world, is an extremely rare surname. The last name Laelianus is habitual in Eastern Europe, particularly Ukraine, where it is an extremely rare surname, and Russia. Much less frequently, Laelianus is the forename as well as the last name.
| quintus lutatius dexter laelianus commander of the Cohors IIII Thracum in 80 AD (b. 50) |
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| marcus pontius laelianus Roman consul in 163 AD, FR (b. 150) |
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ulpius cornelius laelianus Roman imperial usurper in 269, DE (b. 250) |
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