Ends 6, 7 and 8 belonged to Trowell's team. They played exceptional bowls to pick up five unanswered points to go 10-4 up.
The last end was played, but Lynn's team could manage only one shot and the skips shook hands.
This was the 11th centre title for Trowell, the sixth for Matthew Foster, and the fourth for Dylan.
In the semifinal, Trowell's team defeated other family members — their grandfather Bruce Easton, Nathan's sister Kayla Trowell, who is playing great bowls this year, and Matthew and Dylan's father, Mike Foster.
The event had a great field of 12 teams, including one comprising Buzz Abraham, Kirstyn Harrison and 10-year-old Hazel Reti, who travelled from Hawke's Bay for the tournament.