| Sons | Grand-sons | |
Hefty Son O' Mike (uk-usa)    Hefty Young Mike x Hefty Begum |
Astonian Hetty   Hefty Son O' Mike (uk-usa) x Witton Queen |
Magnet Maggie Rooney (uk-usa) Caulfield Matchless Prince (uk-usa) x Astonian Hetty Caulfield Matchless Prince (uk-usa) x Astonian Hetty |
Brynhyfryd Gipsy Girl  Hefty Son O' Mike (uk-usa) x Lady Tams |
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| Brynhyfryd Hefty Billy Hefty Son O' Mike (uk-usa) x Lady Tams |
Brynhyfryd Rose Marie Brynhyfryd Hefty Billy x Lady Byng I I Brynhyfryd Hefty Billy x Lady Byng I I |
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| Lady Hefty Peggy Brynhyfryd Hefty Billy x Lady Byng I I Brynhyfryd Hefty Billy x Lady Byng I I |
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| Brynhyfryd Hefty Princess Hefty Son O' Mike (uk-usa) x Lady Tams |
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| Brynhyfryd Sweetheart Hefty Son O' Mike (uk-usa) x Lady Tams |
Ash Lea Queen Brynhyfryd Smasher x Brynhyfryd Sweetheart Brynhyfryd Smasher x Brynhyfryd Sweetheart |
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| Brynhyfryd Heartsease Brynhyfryd Smasher x Brynhyfryd Sweetheart Brynhyfryd Smasher x Brynhyfryd Sweetheart |
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| Brynhyfryd Lady Ermine Brynhyfryd Smasher x Brynhyfryd Sweetheart Brynhyfryd Smasher x Brynhyfryd Sweetheart |
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| Brynhyfryd Mary Brynhyfryd Smasher x Brynhyfryd Sweetheart Brynhyfryd Smasher x Brynhyfryd Sweetheart |
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| Brynhyfryd Old Dutch Brynhyfryd Smasher x Brynhyfryd Sweetheart Brynhyfryd Smasher x Brynhyfryd Sweetheart |
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| Buster V (can) Brynhyfryd Smasher x Brynhyfryd Sweetheart Brynhyfryd Smasher x Brynhyfryd Sweetheart |
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| Cora (uk 1925) Hefty Son O' Mike (uk-usa) x Ruby (uk 1923) |
O' Donovan Becher (uk-can) Hollycroft Blunderer x Cora (uk 1925) Hollycroft Blunderer x Cora (uk 1925) |
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| Duke Of Roxbury Hefty Son O' Mike (uk-usa) x Newington Banshee Of Tildale (uk-usa) |
Duke Bunco Duke Of Roxbury x Roxburne Duchess Duke Of Roxbury x Roxburne Duchess |
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| Independent Mike Duke Of Roxbury x Lady Ward Duke Of Roxbury x Lady Ward |
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| Junko (usa 1923) Duke Of Roxbury x Roxburne Duchess Duke Of Roxbury x Roxburne Duchess |
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| Oklahoma Jiggs Duke Of Roxbury x Princess Brookside Duke Of Roxbury x Princess Brookside |
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| Roxbourne Infatuation Duke Of Roxbury x Princess Brookside Duke Of Roxbury x Princess Brookside |
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| Roxbourne Lady Belle Duke Of Roxbury x Princess Brookside Duke Of Roxbury x Princess Brookside |
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| Fernstone Hefty Mike Hefty Son O' Mike (uk-usa) x Brynhyfryd Nana |
Bullens Mugsy Fernstone Hefty Mike x Lump Of Gold Fernstone Hefty Mike x Lump Of Gold |
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| Field Sturdy Mike Fernstone Hefty Mike x Lump Of Gold Fernstone Hefty Mike x Lump Of Gold |
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| Mistress Diana Fernstone Hefty Mike x Lump Of Gold Fernstone Hefty Mike x Lump Of Gold |
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| Queen X I I I Fernstone Hefty Mike x Lump Of Gold Fernstone Hefty Mike x Lump Of Gold |
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| Gentle Mary (uk 1921) Hefty Son O' Mike (uk-usa) x Eastham Marchioness |
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| Georgia Peach Stone Hefty Son O' Mike (uk-usa) x Newing Queen |
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| Gloria Swanson Hefty Son O' Mike (uk-usa) x Lady Chancellor I I |
Wild Flower Newing Paratus x Gloria Swanson Newing Paratus x Gloria Swanson |
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| Hefty Biddy Hefty Son O' Mike (uk-usa) x Hefty Pixie |
Hefty Samson (uk-can)  Caulfield Monarch x Hefty Biddy Caulfield Monarch x Hefty Biddy |
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Hefty Sincerity (uk-usa)  Caulfield Monarch x Hefty Biddy Caulfield Monarch x Hefty Biddy |
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| Hefty Sweet Duchess (uk-usa) Caulfield Monarch x Hefty Biddy Caulfield Monarch x Hefty Biddy |
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| Hefty Boy (usa) Hefty Son O' Mike (uk-usa) x Boltonia Beauty |
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| Hefty Grandson Of Mike Hefty Son O' Mike (uk-usa) x Boltonia Beauty |
Hefty Roxton (usa) Hefty Grandson Of Mike x Roxton Maggie ( Leister Butcher Girl O' Roxton) Hefty Grandson Of Mike x Roxton Maggie ( Leister Butcher Girl O' Roxton) |
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| Leister Mickey Girl Hefty Grandson Of Mike x Roxton Maggie ( Leister Butcher Girl O' Roxton) Hefty Grandson Of Mike x Roxton Maggie ( Leister Butcher Girl O' Roxton) |
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| Woodlyn Lady Mickey Hefty Grandson Of Mike x Roxton Maggie ( Leister Butcher Girl O' Roxton) Hefty Grandson Of Mike x Roxton Maggie ( Leister Butcher Girl O' Roxton) |
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| Hefty Jiggs Hefty Son O' Mike (uk-usa) x Winnie Winkle |
Luana Lillith Hefty Jiggs x Louana Hefty Jiggs x Louana |
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Hefty Master Grumpy  Hefty Son O' Mike (uk-usa) x Hefty Tradition |
Hefty Master Hefty Master Grumpy x Badminton Babs Hefty Master Grumpy x Badminton Babs |
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| Novo Maisie Hefty Master Grumpy x Silent Mollie Of Clough Hefty Master Grumpy x Silent Mollie Of Clough |
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| Rosy Rapture Hefty Master Grumpy x Lady Wilburs Hefty Master Grumpy x Lady Wilburs |
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| Sir Tranqull Grumpy Hefty Master Grumpy x Katusha Hefty Master Grumpy x Katusha |
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| Son O' Grumpy Hefty Master Grumpy x Lady Wilburs Hefty Master Grumpy x Lady Wilburs |
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| Tytherington Gwen Hefty Master Grumpy x Tytherington Lady Hefty Master Grumpy x Tytherington Lady |
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| Hefty Mike Double Hefty Son O' Mike (uk-usa) x Mondiofield Pansy |
Beelzebub Husky Mike Hefty Mike Double x Guess (can-usa) Hefty Mike Double x Guess (can-usa) |
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| Peter Pan (usa) Hefty Mike Double x Guess (can-usa) Hefty Mike Double x Guess (can-usa) |
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| Hefty Queen (usa 1922) Hefty Son O' Mike (uk-usa) x Tildale Of Banshee |
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| Hefty Success Hefty Son O' Mike (uk-usa) x Hefty Tradition |
Bellehatch Lena The Jabberwock x Hefty Success The Jabberwock x Hefty Success |
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| Newington Star Turn Fair Isle x Hefty Success Fair Isle x Hefty Success |
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| The Snark Of Bellehatch The Jabberwock x Hefty Success The Jabberwock x Hefty Success |
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| Hootch Hefty Son O' Mike (uk-usa) x Daisy King |
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| John Bull Esg Hefty Son O' Mike (uk-usa) x Lady Judith (usa 1921) |
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| Lady Betty (usa 1922) Hefty Son O' Mike (uk-usa) x Lady Judith (usa 1921) |
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| Madam Poppy Hefty Son O' Mike (uk-usa) x Media Redner |
Bestyette Jim Cracker Tam Betsyette x Madam Poppy Tam Betsyette x Madam Poppy |
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| Countess Topsy Ch Upton Boy I I x Madam Poppy Ch Upton Boy I I x Madam Poppy |
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| Flipper Flapper Tam Betsyette x Madam Poppy Tam Betsyette x Madam Poppy |
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| Hefty Spark Plug Ch Upton Boy I I x Madam Poppy Ch Upton Boy I I x Madam Poppy |
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| Mollie The Midget Tam Betsyette x Madam Poppy Tam Betsyette x Madam Poppy |
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| Mushface Glory Ch Upton Boy I I x Madam Poppy Ch Upton Boy I I x Madam Poppy |
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| Phoebe (usa 1923) Ch Upton Boy I I x Madam Poppy Ch Upton Boy I I x Madam Poppy |
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| Steve Girl Tam Betsyette x Madam Poppy Tam Betsyette x Madam Poppy |
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| Miss Hefty Hefty Son O' Mike (uk-usa) x Brynhyfryd Nana |
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| Miss Hefty Boltonia Hefty Son O' Mike (uk-usa) x Lady Chancellor I I |
Little Sister I I Ivan Teg x Miss Hefty Boltonia Ivan Teg x Miss Hefty Boltonia |
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| Prince Of Dyfed Ivan Teg x Miss Hefty Boltonia Ivan Teg x Miss Hefty Boltonia |
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| Mosele Huddle Hefty Son O' Mike (uk-usa) x Chalfonte Rose |
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| Royal Joker Hefty Son O' Mike (uk-usa) x Lady Judith (usa 1921) |
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| Sesqui Queen Hefty Son O' Mike (uk-usa) x Newing Queen |
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| Silent Knight I I I Hefty Son O' Mike (uk-usa) x Princess Bess (usa 1924) |
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| Tex Reckard Hefty Son O' Mike (uk-usa) x Lady Chancellor I I |
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| Tug O' War (usa 1922) Hefty Son O' Mike (uk-usa) x Daisy King |
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| Westdorf Son O' Mike Hefty Son O' Mike (uk-usa) x Winnie Winkle |
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| Wild Wild Susan Hefty Son O' Mike (uk-usa) x Peggy M (usa) |