Globally, O'Loghlen (O'Loghlen 
) is an extremely rare unknown gender first name. Predominantly, O'Loghlen is the last name as well as the forename.
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| O'Loghlen | Australia, Canada, Ireland, United Kingdom, United States |
| colman o'loghlen (1745-1810) (b. 1745) |
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sir colman o'loghlen, 2nd baronet British politician (b. 1819) |
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| sir michael o'loghlen, 1st baronet Irish judge and politician (b. 1789) |
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| sir michael o'loghlen, 4th bt. (1866-1934) (b. 1866) |
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| colman seward o'loghlen (1869-1909) (b. 1869) |
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| sir charles hugh ross o'loghlen, 5th bt. (1881-1951) (b. 1881) |
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| ross bryan o'loghlen (1914-1944) (b. 1914) |
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| sir colman michael o'loghlen, 6th bt. (1916-2014) (b. 1916) |
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| ross o'loghlen (born 1948) (b. 1948) |
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| colman o'loghlen (born 1955) (b. 1955) |
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| unknown daughter o'loghlen Peerage person ID=667129 |
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| colman o'loghlen (died 1826) |
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| unknown daughter o'loghlen Peerage person ID=667128 |
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| unknown daughter o'loghlen Peerage person ID=667127 |
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Mr, Linda, Niamh, Martin, Sinead, Colman, Kirsty, Rachel, Ronald, Declan, Eilish, Eimear, Fergus, Orlagh, Michael, Shevaun, Aisling, Patrick, Dominic, Margaret, Laura, Gemma, David, Danny, Ana, Pat, Joe, Mick, Colm, Brid, Kate, Kent, Paul, Patricia, Reyd, John, Joel, Orla, Maura, Sarah, Ciara, Brian, Kelly, Peter, Jack, and Christine