Comparing 我一个弟兄们 with 我的一个兄弟 《庭审现场》２０１５１２２６ 谁在说谎 http://news.cntv.cn/2015/12/26/VIDE1451136647389475.shtml. Civil case plaintiff 李付成, at time mark 01:42, says： 我一个弟兄们（有三间老房子）. Would 我的一个兄弟 (or at least 我的一个弟兄) not be more usual? Any comment on the first version?
我一个弟兄们 is grammatically incorrect: 一个 (=1) conflicts with 们 (>1).I watched the video in question. The interviewee actually said 我一个弟兄. It is the subtitle that added a 们 at the end.