Hello deadants,  
In your McManus family have you found that Thomas McManus, son of Thomas & Bridget Mcmanus (Keogh) came to Australia, Qld to be precise.  Not sure when he saild to Aust.
He married Alice George - 1893/B16111  McManus Thomas; George   Alice - QLD BDM's online.
They had -
Issue Found on QLD BDM Birth Index website
1893/B52754   Harriet Alice                   McManus   Thomas   Alice George
1895/B57154   Thomas Franklin   McManus   Thomas   Alice George
1898/C1416   Mary Ann                        McManus   Thomas   Alice George
1901/C1138   Annie Louisa               McManus   Thomas   Alice George
1903/C1507   Eileen                                 McManus   Thomas   Alice George
1906/C1815   Catherine                     McManus   Thomas   Alice George
1908/C2135   John Edward                  McManus   Thomas   Alice George
1911/C2279   Isabella Frances   McManus   Thomas   Alice George
 
Thomas died Brisbane, 1925/B46576 Thomas McManus; Thomas McManus; Bridget Keogh
Alice died Brisbane, 1955/B9304   Alice  McManus;  David George;  Elizabeth King.
Hope this may be of some help,
toadstool