Father's epitaph

Hello. I'm John. I'm 32. My mum died suddenly in 1995 from a brain haemorrhage, leaving my dad to raise me, my older brother & younger sister. In 2011 Dad passed away after a short illness & a 15 year struggle to live without the most amazing woman who ever lived. He is buried with my mum but to this day we cannot afford to have his name on the headstone they now share. I work full time & share a beautiful daughter, who missed her grandad by 10 months, with my partner who is unable to work. My sister is raising her 3 children with their father & life's general struggle means they have no money and my brother is now also unable to work due to Guillain–Barré syndrome. It would mean the world to all of us to have his name on the headstone along with our Mum’s & be remembered for eternity together...