| Sons | Grand-sons | |
Brynhyfryd Hefty Billy   Hefty Son O' Mike (uk-usa) x Lady Tams |
Brynhyfryd Rose Marie  Brynhyfryd Hefty Billy x Lady Byng I I |
Ash Lea Avis Roial Rustler (uk-can) x Brynhyfryd Rose Marie Roial Rustler (uk-can) x Brynhyfryd Rose Marie |
| Lady Hefty Peggy Brynhyfryd Hefty Billy x Lady Byng I I |