I fear I may be on the wrong track with this Henry Johnson. For that info to be correct for my Henry he would have had to marry twice - maybe that might be the case. There is that Henry Johnson that was married to Emma Betts (mentioned on the NSW BDM as being married in Brisbane) hence the reason of this coincidence of an Emma being buried in the same plot. There could be a mistake by the informant of the certification details and inadvertently informed the wrong mother. You never know.