Marcus Trescothick became the leading first-class run-maker at his beloved Taunton during the course of a model captain's innings on the second day of the LV= County Championship match with Lancashire.
The 38-year-old former England opener began Somerset's reply to Lancashire's first-innings 266 needing just three runs to overtake the 7,228 scored by Lionel Palairet at the venue between 1890 and 1909.
As if mindful of the fact, Trescothick took 31 deliveries to get off the mark against the accurate new-ball attack of Glen Chapple and Kyle Hogg.
But, having got the measure of a slow pitch offering some second-day turn, the Somerset skipper blossomed in the afternoon session and went on to contribute an unbeaten 107 to his side's reply of 193 for two.
The day began with Lancashire adding 45 to their overnight score of 221 for six. Tom Smith fell leg before for 14 to the 13th ball of the morning, bowled by Lewis Gregory who took 3-65, before Chapple responded by taking 14 off an over from the young seamer.
It was 249 for eight when Wayne White, on 13, was bowled off a bottom edge by Alfonso Thomas, who returned 3-34. Lancashire then added 17 before left-arm spinner George Dockrell, with 3-48, ended their innings with his first four balls of the day.
Hogg was snapped up by Trescothick at slip off Dockrell's first delivery, and the fourth pinned Simon Kerrigan lbw on the back foot.
Somerset openers Trescothick and Chris Jones were clearly wary of the surface as they scored just 10 runs in as many overs before the lunch interval.
Hogg was even more miserly after the break, sending down five successive maidens. But it was Chapple who made the breakthrough, bowling Jones middle stump for 11 with the total on 19.
The situation appeared made for Nick Compton's powers of concentration but he had made only nine when Kerrigan turned one past his outside edge and bowled him.
Trescothick was dropped on 25 by Ashwell Prince at second slip off White and went to his half-century with a quick single to short cover that almost saw him run out, having faced 144 balls and hit eight fours and a six.
It was 91 for two at tea, Alviro Petersen having settled in with Trescothick. In the final session the South African had a narrow escape on 37 when he pulled a ball from Steven Croft high to deep midwicket and started to walk off, only for Kerrigan to spill a tough chance above his head almost standing on the boundary rope.
Trescothick raised the century partnership with a dabbed boundary to third man. Then came his third first-class hundred of the season - and 54th of his career - brought up with a two through the off side off Kerrigan.
He had faced 219 balls and hit 15 fours and a six in a mixture of studied application and powerful stroke-play. Not many Lancashire fielders joined in the applause, though - perhaps because they thought Trescothick had been caught and bowled by Kerrigan on 50, a loud appeal being rejected by umpire Rob Bailey who judged the ball to have looped up off the pad.
Petersen went to an elegant half-century off 116 balls, with six fours and a six, and was unbeaten on 57 as Somerset ended the day in a strong position.
Lancashire academy director John Stanworth, who is helping with coaching duties for this game, said: "The new ball is due early tomorrow and the first session will be important if we are to restrict Somerset and stay in the game. I believe we are capable of that."
Somerset director of cricket Dave Nosworthy said: "Marcus Trescothick's century was right up there with the best innings I have seen in my coaching career because it was tough to bat on that pitch and it needed the right mentality from the start.
"Alviro Petersen also played well and we need both of them to push on tomorrow because we are by no means in control of the game at this point."