He was the manager of Foster's Menswear (formerly Bradley's) in Louth for many years. He was popular in the town and very well respected. He retired in 1990.
Mr Walster was secretary of Louth and District Angling Club for many years, and was a very successful angler, competing in the England Championships.
He set up the John Walster trophy at Louth Golf Club to raise money for Grimsby Haematology fund in aid of Leukaemia Research.
He was a fine all-round sportsman and competed in many Louth Sportsman's Week events.
The funeral service, conducted by Mark Tyack, was held at Grimsby Crematorium.
Family mourners: son Gary Walster, daughter-in-law Joanna Janicki, grandson Lucas Janicki, sister Joyce Young rep Ron Young, Trevor Sharpe, grandson Ethan Walster, grandson and partner Daniel Walster and Natasha Allen, brother-in-law and sister-in-law Keith and Carol Nattrass, brother-in-law and sister-in-law Michael and Angela Goddard rep Molly Watson, niece Lorraine Twigg, nephew and wife Nicholas and Adele Young, great nephew Keiran Twigg, cousin Roy and Marian Brumby, Chris Kemp, brother-in-law and sister-in-law Wilf and Sue Watson; Albert and Mavis Maw, Colin and Margaret Johnson, Eric Pidgon, John Vickers, John and Gloria Kirsop, Steve and Carol Johnson, Peter and Janet Lait, Cliff and Doreen Hollingsworth, Jack Howden, John Metcalfe rep Brian Metcalfe, Trevor Moody rep Simon Moody and the Louth Golf Club, Tom and Maureen Eade, Karen Sanderson, John Dickinson, Ron Thomas, Derek Johnson, Cyril Smith, Mr and Mrs Greenlees, Patrick Bell, Geoffrey Glover rep Mr and Mrs Lambert, Malcolm Landles rep Ann Landles, Mick and Sue Maddison, Ian Laking, Paul Jacklin, Richard Pollitt, Chris Robinson rep Stuart and Pearl Robinson, Howard Milborrow, John Ranshaw rep Steve Savage, Annette Falkinder, Stan Allison rep Dave Bristow, Sue Pettitt, Mick Chambers rep Pauline, John Green, Pete Collings rep Steve Newborough, Alec Lovesey, Alan Mountain, Brenda Nutt, Robert Nutt, Geoff and Maisie Allison, Mel and Diane Panton rep Natalie Cording, Jim Foster, Stuart Walsh, Mr L Whitehead, Philip Johnson, Peter Goy, Connie Sutton, Barry Brown rep Iris Brown, Rick Dovey rep Jill Dovey, Pam Holloway and Dean Plowers.
Funeral directors was V Walker, Louth.