I am very familiar - been going there since I was little - made the rounds on Memorial Day with my grandmother!!
Anyway - yes I'm sure I've seen Mahoney's.
The Catholic Cemetery in Malden has been very helpful - with that cemetery and the one in Cambridge on Rindge Ave - there number is 781-322-6300- ask for records. If you have a name and date - they'll look for you. If you just have a name - they might charge for a 'genealogy' lookup. I've never been charged - staff has been more than helpful. If you live in the area they are located in the Holy Cross Cemetery in Malden.
or do you need some death record lookups first?
You can go to
www.familysearch.orgnext screen, if it comes up sometimes it doesn't go this way
you would click on 'try updated site'
next screen scroll down and click on'usa,canada,mexico'
next screen scroll down until you find Mass death records
If you need help, let me know.
Margaret