For this Duncan Sydney there are 2 different names on Yasni.
In the ranking of the most common first names Duncan Sydney is on position 4589.
Male first name (English): Duncan, brown (haired) warrior; Old Irish (Word format); donn = brown; chadh = the warriors
Male first name (English): Sydney, Old French (surname as first name), originally an English surname, from the village of Saint-Denis in France is derived, the origin of the name see the name 'Dennis' Female first name (English): Sydney, Old French ( Surname as first name), originally an English surname, derived from the village of Saint-Denis in France, the origin of the name see the name 'Dennis'
