Popularity in England and Wales
Numbers
| Brennan (masculine) | |||
| Year | Rank | Percent Used | |
| 2021 | - | - | |
| 2020 | - | - | |
| 2019 | - | - | |
| 2018 | - | - | |
| 2017 | - | - | |
| 2016 | - | - | |
| 2015 | - | - | |
| 2014 | - | - | |
| 2013 | - | - | |
| 2012 | - | - | |
| 2011 | - | - | |
| 2010 | - | - | |
| 2009 | - | - | |
| 2008 | - | - | |
| 2007 | #987 | 0.007 | |
| 2006 | #939 | 0.007 | |
| 2005 | #872 | 0.008 | |
| 2004 | - | - | |
| 2003 | #833 | 0.008 | |
| 2002 | #559 | 0.012 | |
| 2001 | #544 | 0.011 | |
| 2000 | #543 | 0.011 | |
| 1999 | #586 | 0.010 | |
| 1998 | #689 | 0.007 | |
| 1997 | #694 | 0.007 | |
| 1996 | #755 | 0.006 | |
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