View the most religious surnames in Ireland

Where Does The Last Name O'Shannessy Come From? ^{nationality or country of origin}

The last name O'Shannessy occurs more in Australia more than any other country or territory. It may appear as:. For other possible spellings of this name click here.

How Common Is The Last Name O'Shannessy? ^{popularity and diffusion}

The surname is the 336,565^th most commonly occurring last name at a global level, held by approximately 1 in 6,655,293 people. This surname is predominantly found in Oceania, where 99 percent of O'Shannessy reside; 99 percent reside in Australasia and 99 percent reside in Australia and New Zealand.

This surname is most prevalent in Australia, where it is held by 1,070 people, or 1 in 25,230. In Australia O'Shannessy is mostly concentrated in: Victoria, where 65 percent reside, New South Wales, where 18 percent reside and Queensland, where 12 percent reside. Other than Australia this last name occurs in 7 countries. It is also common in New Zealand, where 2 percent reside and The United States, where 0 percent reside.

O'Shannessy Family Population Trend ^{historical fluctuation}

The frequency of O'Shannessy has changed over time. In The United States the share of the population with the surname expanded 167 percent between 1880 and 2014 and in England it expanded 400 percent between 1881 and 2014.

O'Shannessy Last Name Statistics ^demography

The religious devotion of those bearing the surname is predominantly Catholic (100%) in Ireland.