Table:
text: List of Talyllyn Railway rolling stock
Steam locomotives
Steam locomotives
Number_ Name_ Type_ Builder Works_number Date_built
1 Talyllyn 0-4-2 ST Fletcher,Jennings &Co. , Whitehaven 42 1864
2 Dolgoch 0-4-0 WT Fletcher,Jennings &Co., Whitehaven 63 1866
3 Sir Haydn 0-4-2 ST Hughes, Falcon Works , Loughborough 323 1878
4 Edward Thomas 0-4-2 ST Kerr Stuart , Stoke-on-Trent 4047 1921
6 Douglas 0-4-0 WT Andrew Barclay , Kilmarnock 1431 1918
7 Tom Rolt 0-4-2 T Talyllyn Railway none given 1991

Question: Who was the builder of the locomotive with serial number 323 in the Talyllyn Railway rolling stock list?