Nottinghamshire police are running separate murder inquiries in relation to the two incidents.
A 43-year-old man has been arrested on suspicion of Maughan's murder.
Detectives have confirmed they are not looking for anyone else in relation to that incident.
Figures show the force has recorded almost 300 knife crimes in the past year.
Writing on Facebook, Martin's mother Kathleen said: "Today I had a fone call that broke my heart in two, asking me did I hear the news that my son fell to his knees.
"I begged god for mercy not to take my Martin away, but he didn't listen he's gone where all the Angels are in that kingdom in the sky.
"Please lord watch out for my boy put your arms around my Mart hold him as tight as you can.
"I no hes looking down on us from that kingdom in the sky.
"My rock my life my boy I'll never forget the laughs we shared i no your with me now more than ever before i love you son i miss your voice too.
"No I'm not going to answer to your calls asking me how are you Ma.
"Rest in God's love my son Your lil Ma xxxxxxxx."
Another tribute left to the 27-year-old said: "I will always cherish our friendship we had. You made the days a lot more memorable with your lovely kind ways."
Another read: "You were a top guy, you had the biggest heart, love you loads."