There is at least 1 other, "Martin Hogan" who resides in Colorado, maybe 2, one is a convict. The other is still alive after the Aug 11 1875 death of this profiled Martin.
Sources
↑ "United States Census, 1870", database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MC67-LH9 : 12 June 2019), Daniel Loma* in entry for Martin Hogan, 1870. --Affiliate Publication Number: M593--GS Film Number: 000553247--Digital Folder Number: 004268868--Image Number: 00200