Marquitos' son,
Marcos Alonso Peña, was also a footballer, and a coach. He represented, with success,
Atlético Madrid,
FC Barcelona and Spain – amongst others. His grandson
Marcos Alonso Mendoza also played for Real Madrid and Spain, and also had a lengthy spell in England, notably with
Bolton Wanderers and
Chelsea. Marquitos died on 6 March 2012 in his hometown of Santander, one month shy of his 79th birthday. ==Honours==