Their 27-5 victory over Blundell's, in a competition predominantly for one-term schools, allowed outside-half Edward Britton to follow in family footsteps.
His father, Mark, was a runner-up in the same tournament with Ipswich in 1965, while elder brother James was in the victorious Wellington team of 1992.
Edward was only on target with a conversion in his side's five-try win over Blundell's. The Wellington winger Doug Rowe took the plaudits with two tries in the final - one a sprint from the half-way line.
"They will remember this day for the rest of their lives," said Wellington master Ken Hopkins who had taken his side to a victory over Millfield in the Surrey Sevens a week earlier.
Welsh successes were few and far between on the first day of the national sevens, but yesterday Birchgrove, Glantaf and Dwr y Felin flew the dragon into today's junior tournament quarter- finals. Last year's runners-up, Dwr y Felin, look in the mood to go one better, conceding just 19 points on their way to a last-eight meeting with Berkhampstead.
Malsis School managed the biggest win of the day in the preparatory school tournament, a 71-0 victory over St Michael's, Kent, but still did not qualify for today's last 16.
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